Annual report pursuant to Section 13 and 15(d)

Schedule III - Real Estate and Accumulated Depreciation (Detail)

v3.19.3.a.u2
Schedule III - Real Estate and Accumulated Depreciation (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 457,922      
Land, initial cost 138,037      
Buildings & improvements, initial cost 859,268      
Improvement costs capitalized subsequent to acquisition 67,084      
Land, total cost 138,042      
Buildings & improvements, total cost 926,347      
Total 1,064,389 $ 949,822 $ 906,850 $ 833,203
Accumulated depreciation 210,944 $ 178,475 $ 153,387 $ 134,329
Net real estate 853,445      
Raleigh, North Carolina Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost 0      
Land, initial cost 960      
Buildings & improvements, initial cost 4,481      
Improvement costs capitalized subsequent to acquisition 35      
Land, total cost 960      
Buildings & improvements, total cost 4,516      
Total 5,476      
Accumulated depreciation 2,304      
Net real estate $ 3,172      
Year construction/ improvements 1997      
Date acquired Dec. 23, 2003      
Canton, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 1,469      
Land, initial cost 186      
Buildings & improvements, initial cost 3,083      
Improvement costs capitalized subsequent to acquisition 500      
Land, total cost 187      
Buildings & improvements, total cost 3,582      
Total 3,769      
Accumulated depreciation 1,553      
Net real estate $ 2,216      
Year construction/ improvements 1994      
Date acquired Jan. 30, 2004      
Akron, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,973      
Buildings & improvements, initial cost 6,771      
Improvement costs capitalized subsequent to acquisition 2,793      
Land, total cost 1,974      
Buildings & improvements, total cost 9,563      
Total 11,537      
Accumulated depreciation 3,287      
Net real estate $ 8,250      
Year construction/ improvements 1968      
Year construction/improvements one 1999      
Date acquired Apr. 29, 2004      
Charlotte, North Carolina Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 740      
Buildings & improvements, initial cost 8,423      
Improvement costs capitalized subsequent to acquisition (1,752)      
Land, total cost 510      
Buildings & improvements, total cost 6,901      
Total 7,411      
Accumulated depreciation 3,417      
Net real estate $ 3,994      
Year construction/ improvements 1984      
Year construction/improvements one 1995      
Date acquired Jun. 30, 2004      
Canton, North Carolina Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,225      
Land, initial cost 150      
Buildings & improvements, initial cost 5,050      
Improvement costs capitalized subsequent to acquisition 7,285      
Land, total cost 150      
Buildings & improvements, total cost 12,335      
Total 12,485      
Accumulated depreciation 2,982      
Net real estate $ 9,503      
Year construction/ improvements 1998      
Year construction/improvements one 2014      
Date acquired Jul. 06, 2004      
Crenshaw, Pennsylvania Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 100      
Buildings & improvements, initial cost 6,574      
Improvement costs capitalized subsequent to acquisition 269      
Land, total cost 100      
Buildings & improvements, total cost 6,843      
Total 6,943      
Accumulated depreciation 2,727      
Net real estate $ 4,216      
Year construction/ improvements 1991      
Date acquired Aug. 05, 2004      
Lexington, North Carolina Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 820      
Buildings & improvements, initial cost 2,107      
Improvement costs capitalized subsequent to acquisition 69      
Land, total cost 820      
Buildings & improvements, total cost 2,176      
Total 2,996      
Accumulated depreciation 899      
Net real estate $ 2,097      
Year construction/ improvements 1986      
Date acquired Aug. 05, 2004      
Austin, Texas Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,000      
Buildings & improvements, initial cost 6,296      
Improvement costs capitalized subsequent to acquisition 954      
Land, total cost 1,000      
Buildings & improvements, total cost 7,250      
Total 8,250      
Accumulated depreciation 2,661      
Net real estate $ 5,589      
Year construction/ improvements 2001      
Date acquired Sep. 16, 2004      
Mt. Pocono, Pennsylvania Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 350      
Buildings & improvements, initial cost 5,819      
Improvement costs capitalized subsequent to acquisition 18      
Land, total cost 350      
Buildings & improvements, total cost 5,837      
Total 6,187      
Accumulated depreciation 2,311      
Net real estate $ 3,876      
Year construction/ improvements 1995      
Year construction/improvements one 1999      
Date acquired Oct. 15, 2004      
San Antonio, Texas Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 843      
Buildings & improvements, initial cost 7,514      
Improvement costs capitalized subsequent to acquisition 2,240      
Land, total cost 843      
Buildings & improvements, total cost 9,754      
Total 10,597      
Accumulated depreciation 3,614      
Net real estate $ 6,983      
Year construction/ improvements 1999      
Date acquired Feb. 10, 2005      
Big Flats, New York Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,119      
Land, initial cost 275      
Buildings & improvements, initial cost 6,459      
Improvement costs capitalized subsequent to acquisition 34      
Land, total cost 275      
Buildings & improvements, total cost 6,493      
Total 6,768      
Accumulated depreciation 2,456      
Net real estate $ 4,312      
Year construction/ improvements 2001      
Date acquired Apr. 15, 2005      
Wichita, Kansas Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,525      
Buildings & improvements, initial cost 9,703      
Improvement costs capitalized subsequent to acquisition 327      
Land, total cost 1,525      
Buildings & improvements, total cost 10,030      
Total 11,555      
Accumulated depreciation 3,826      
Net real estate $ 7,729      
Year construction/ improvements 2000      
Date acquired May 18, 2005      
Eatontown, New Jersey Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,662      
Land, initial cost 1,351      
Buildings & improvements, initial cost 3,520      
Improvement costs capitalized subsequent to acquisition 534      
Land, total cost 1,351      
Buildings & improvements, total cost 4,054      
Total 5,405      
Accumulated depreciation 1,585      
Net real estate $ 3,820      
Year construction/ improvements 1991      
Date acquired Jul. 07, 2005      
Duncan, South Carolina Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 8,637      
Land, initial cost 783      
Buildings & improvements, initial cost 10,790      
Improvement costs capitalized subsequent to acquisition 1,889      
Land, total cost 783      
Buildings & improvements, total cost 12,679      
Total 13,462      
Accumulated depreciation 4,588      
Net real estate $ 8,874      
Year construction/ improvements 1984      
Year construction/improvements one 2001      
Year construction/improvements two 2007      
Date acquired Jul. 14, 2005      
Duncan, South Carolina Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,147      
Land, initial cost 195      
Buildings & improvements, initial cost 2,682      
Improvement costs capitalized subsequent to acquisition 470      
Land, total cost 195      
Buildings & improvements, total cost 3,152      
Total 3,347      
Accumulated depreciation 1,140      
Net real estate $ 2,207      
Year construction/ improvements 1984      
Year construction/improvements one 2001      
Year construction/improvements two 2007      
Date acquired Jul. 14, 2005      
Clintonville, Wisconsin Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 55      
Buildings & improvements, initial cost 4,717      
Improvement costs capitalized subsequent to acquisition 3,250      
Land, total cost 55      
Buildings & improvements, total cost 7,967      
Total 8,022      
Accumulated depreciation 2,440      
Net real estate $ 5,582      
Year construction/ improvements 1992      
Year construction/improvements one 2013      
Date acquired Oct. 31, 2005      
Maple Heights, Ohio Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,000      
Land, initial cost 1,609      
Buildings & improvements, initial cost 10,065      
Improvement costs capitalized subsequent to acquisition 3,079      
Land, total cost 1,609      
Buildings & improvements, total cost 13,144      
Total 14,753      
Accumulated depreciation 5,235      
Net real estate $ 9,518      
Year construction/ improvements 1974      
Date acquired Dec. 21, 2005      
Richmond, Virginia Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 736      
Buildings & improvements, initial cost 5,336      
Improvement costs capitalized subsequent to acquisition 457      
Land, total cost 736      
Buildings & improvements, total cost 5,793      
Total 6,529      
Accumulated depreciation 2,022      
Net real estate $ 4,507      
Year construction/ improvements 1972      
Date acquired Dec. 30, 2005      
Champaign, Illinois Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 687      
Buildings & improvements, initial cost 2,036      
Improvement costs capitalized subsequent to acquisition (41)      
Land, total cost 687      
Buildings & improvements, total cost 1,995      
Total 2,682      
Accumulated depreciation 709      
Net real estate $ 1,973      
Year construction/ improvements 1996      
Date acquired Feb. 21, 2006      
Champaign, Illinois Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,347      
Buildings & improvements, initial cost 3,992      
Improvement costs capitalized subsequent to acquisition 565      
Land, total cost 1,347      
Buildings & improvements, total cost 4,557      
Total 5,904      
Accumulated depreciation 1,509      
Net real estate $ 4,395      
Year construction/ improvements 1996      
Date acquired Feb. 21, 2006      
Champaign, Illinois Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 842      
Buildings & improvements, initial cost 2,495      
Improvement costs capitalized subsequent to acquisition 353      
Land, total cost 842      
Buildings & improvements, total cost 2,848      
Total 3,690      
Accumulated depreciation 943      
Net real estate $ 2,747      
Year construction/ improvements 1996      
Date acquired Feb. 21, 2006      
Champaign, Illinois Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 770      
Buildings & improvements, initial cost 2,281      
Improvement costs capitalized subsequent to acquisition 323      
Land, total cost 770      
Buildings & improvements, total cost 2,604      
Total 3,374      
Accumulated depreciation 863      
Net real estate $ 2,511      
Year construction/ improvements 1996      
Date acquired Feb. 21, 2006      
Burnsville, Minnesota Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 8,052      
Land, initial cost 3,511      
Buildings & improvements, initial cost 8,746      
Improvement costs capitalized subsequent to acquisition 7,071      
Land, total cost 3,511      
Buildings & improvements, total cost 15,817      
Total 19,328      
Accumulated depreciation 5,847      
Net real estate $ 13,481      
Year construction/ improvements 1984      
Date acquired May 10, 2006      
Menomonee Falls, Wisconsin Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 625      
Buildings & improvements, initial cost 6,911      
Improvement costs capitalized subsequent to acquisition 686      
Land, total cost 625      
Buildings & improvements, total cost 7,597      
Total 8,222      
Accumulated depreciation 2,665      
Net real estate $ 5,557      
Year construction/ improvements 1986      
Year construction/improvements one 2000      
Date acquired Jun. 30, 2006      
Baytown, Texas Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 221      
Buildings & improvements, initial cost 2,443      
Improvement costs capitalized subsequent to acquisition 2,478      
Land, total cost 221      
Buildings & improvements, total cost 4,921      
Total 5,142      
Accumulated depreciation 1,610      
Net real estate $ 3,532      
Year construction/ improvements 1997      
Date acquired Jul. 11, 2006      
Mason, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,689      
Land, initial cost 797      
Buildings & improvements, initial cost 6,258      
Improvement costs capitalized subsequent to acquisition 547      
Land, total cost 797      
Buildings & improvements, total cost 6,805      
Total 7,602      
Accumulated depreciation 2,586      
Net real estate $ 5,016      
Year construction/ improvements 2002      
Date acquired Jan. 05, 2007      
Raleigh, North Carolina Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,606      
Buildings & improvements, initial cost 5,513      
Improvement costs capitalized subsequent to acquisition 3,749      
Land, total cost 1,606      
Buildings & improvements, total cost 9,262      
Total 10,868      
Accumulated depreciation 3,103      
Net real estate $ 7,765      
Year construction/ improvements 1994      
Date acquired Feb. 16, 2007      
Tulsa, Oklahoma Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 0      
Buildings & improvements, initial cost 14,057      
Improvement costs capitalized subsequent to acquisition 534      
Land, total cost 0      
Buildings & improvements, total cost 14,591      
Total 14,591      
Accumulated depreciation 5,428      
Net real estate $ 9,163      
Year construction/ improvements 2004      
Date acquired Mar. 01, 2007      
Hialeah, Florida Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 3,562      
Buildings & improvements, initial cost 6,672      
Improvement costs capitalized subsequent to acquisition 769      
Land, total cost 3,562      
Buildings & improvements, total cost 7,441      
Total 11,003      
Accumulated depreciation 2,485      
Net real estate $ 8,518      
Year construction/ improvements 1956      
Year construction/improvements one 1992      
Date acquired Mar. 09, 2007      
Tewksbury, Massachusetts Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Year construction/ improvements 1985      
Year construction/improvements one 1989      
Mason, Ohio Retail Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,201      
Buildings & improvements, initial cost 4,961      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,201      
Buildings & improvements, total cost 4,961      
Total 6,162      
Accumulated depreciation 1,619      
Net real estate $ 4,543      
Year construction/ improvements 2007      
Date acquired Jul. 01, 2007      
Cicero, New York Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,263      
Land, initial cost 299      
Buildings & improvements, initial cost 5,019      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 299      
Buildings & improvements, total cost 5,019      
Total 5,318      
Accumulated depreciation 1,586      
Net real estate $ 3,732      
Year construction/ improvements 2005      
Date acquired Sep. 06, 2007      
Grand Rapids, Michigan Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 5,063      
Land, initial cost 1,629      
Buildings & improvements, initial cost 10,500      
Improvement costs capitalized subsequent to acquisition 308      
Land, total cost 1,629      
Buildings & improvements, total cost 10,808      
Total 12,437      
Accumulated depreciation 3,517      
Net real estate $ 8,920      
Year construction/ improvements 2001      
Date acquired Sep. 28, 2007      
Bollingbrook, Illinois Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,272      
Buildings & improvements, initial cost 5,003      
Improvement costs capitalized subsequent to acquisition 856      
Land, total cost 1,272      
Buildings & improvements, total cost 5,859      
Total 7,131      
Accumulated depreciation 2,049      
Net real estate $ 5,082      
Year construction/ improvements 2002      
Date acquired Sep. 28, 2007      
Decatur, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 783      
Buildings & improvements, initial cost 3,241      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 783      
Buildings & improvements, total cost 3,241      
Total 4,024      
Accumulated depreciation 1,053      
Net real estate $ 2,971      
Year construction/ improvements 1989      
Date acquired Dec. 13, 2007      
Decatur, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 205      
Buildings & improvements, initial cost 847      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 205      
Buildings & improvements, total cost 847      
Total 1,052      
Accumulated depreciation 275      
Net real estate $ 777      
Year construction/ improvements 1989      
Date acquired Dec. 13, 2007      
Decatur, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 257      
Buildings & improvements, initial cost 1,062      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 257      
Buildings & improvements, total cost 1,062      
Total 1,319      
Accumulated depreciation 345      
Net real estate $ 974      
Year construction/ improvements 1989      
Date acquired Dec. 13, 2007      
Lawrenceville, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 678      
Buildings & improvements, initial cost 2,807      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 678      
Buildings & improvements, total cost 2,807      
Total 3,485      
Accumulated depreciation 912      
Net real estate $ 2,573      
Year construction/ improvements 2005      
Date acquired Dec. 13, 2007      
Snellville, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 176      
Buildings & improvements, initial cost 727      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 176      
Buildings & improvements, total cost 727      
Total 903      
Accumulated depreciation 236      
Net real estate $ 667      
Year construction/ improvements 1986      
Date acquired Dec. 13, 2007      
Covington, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 232      
Buildings & improvements, initial cost 959      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 232      
Buildings & improvements, total cost 959      
Total 1,191      
Accumulated depreciation 312      
Net real estate $ 879      
Year construction/ improvements 2000      
Date acquired Dec. 13, 2007      
Conyers Georgia Office Building [Member]        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 296      
Buildings & improvements, initial cost 1,228      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 296      
Buildings & improvements, total cost 1,228      
Total 1,524      
Accumulated depreciation 399      
Net real estate $ 1,125      
Year construction/ improvements 1994      
Date acquired Dec. 13, 2007      
Cumming, Georgia Medical Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,730      
Land, initial cost 738      
Buildings & improvements, initial cost 3,055      
Improvement costs capitalized subsequent to acquisition 2,524      
Land, total cost 741      
Buildings & improvements, total cost 5,576      
Total 6,317      
Accumulated depreciation 1,474      
Net real estate $ 4,843      
Year construction/ improvements 2004      
Date acquired Dec. 13, 2007      
Reading, Pennsylvania Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,458      
Land, initial cost 491      
Buildings & improvements, initial cost 6,202      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 491      
Buildings & improvements, total cost 6,202      
Total 6,693      
Accumulated depreciation 1,902      
Net real estate $ 4,791      
Year construction/ improvements 2007      
Date acquired Jan. 29, 2008      
Fridley, Minnesota Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,523      
Land, initial cost 1,354      
Buildings & improvements, initial cost 8,074      
Improvement costs capitalized subsequent to acquisition 501      
Land, total cost 1,383      
Buildings & improvements, total cost 8,546      
Total 9,929      
Accumulated depreciation 3,082      
Net real estate $ 6,847      
Year construction/ improvements 1985      
Year construction/improvements one 2006      
Date acquired Feb. 26, 2008      
Pineville, North Carolina Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,010      
Land, initial cost 669      
Buildings & improvements, initial cost 3,028      
Improvement costs capitalized subsequent to acquisition 293      
Land, total cost 669      
Buildings & improvements, total cost 3,321      
Total 3,990      
Accumulated depreciation 988      
Net real estate $ 3,002      
Year construction/ improvements 1985      
Date acquired Apr. 30, 2008      
Marietta, Ohio Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,906      
Land, initial cost 829      
Buildings & improvements, initial cost 6,607      
Improvement costs capitalized subsequent to acquisition 529      
Land, total cost 829      
Buildings & improvements, total cost 7,136      
Total 7,965      
Accumulated depreciation 2,059      
Net real estate $ 5,906      
Year construction/ improvements 1992      
Year construction/improvements one 2007      
Date acquired Aug. 29, 2008      
Chalfont, Pennsylvania Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,420      
Land, initial cost 1,249      
Buildings & improvements, initial cost 6,420      
Improvement costs capitalized subsequent to acquisition 362      
Land, total cost 1,249      
Buildings & improvements, total cost 6,782      
Total 8,031      
Accumulated depreciation 2,186      
Net real estate $ 5,845      
Year construction/ improvements 1987      
Date acquired Aug. 29, 2008      
Orange City, Iowa Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 6,068      
Land, initial cost 258      
Buildings & improvements, initial cost 5,861      
Improvement costs capitalized subsequent to acquisition 6      
Land, total cost 258      
Buildings & improvements, total cost 5,867      
Total 6,125      
Accumulated depreciation 1,660      
Net real estate $ 4,465      
Year construction/ improvements 1990      
Date acquired Dec. 15, 2010      
Hickory, North Carolina Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 5,915      
Land, initial cost 1,163      
Buildings & improvements, initial cost 6,605      
Improvement costs capitalized subsequent to acquisition 357      
Land, total cost 1,163      
Buildings & improvements, total cost 6,962      
Total 8,125      
Accumulated depreciation 2,628      
Net real estate $ 5,497      
Year construction/ improvements 2008      
Date acquired Apr. 04, 2011      
Springfield, Missouri Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,700      
Buildings & improvements, initial cost 12,038      
Improvement costs capitalized subsequent to acquisition 532      
Land, total cost 1,845      
Buildings & improvements, total cost 12,425      
Total 14,270      
Accumulated depreciation 3,137      
Net real estate $ 11,133      
Year construction/ improvements 2006      
Date acquired Jun. 20, 2011      
Boston Heights, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,337      
Land, initial cost 449      
Buildings & improvements, initial cost 3,010      
Improvement costs capitalized subsequent to acquisition 11      
Land, total cost 449      
Buildings & improvements, total cost 3,021      
Total 3,470      
Accumulated depreciation 1,100      
Net real estate $ 2,370      
Year construction/ improvements 2011      
Date acquired Oct. 20, 2011      
Parsippany, New Jersey Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 5,967      
Land, initial cost 1,696      
Buildings & improvements, initial cost 7,077      
Improvement costs capitalized subsequent to acquisition 252      
Land, total cost 1,696      
Buildings & improvements, total cost 7,329      
Total 9,025      
Accumulated depreciation 2,217      
Net real estate $ 6,808      
Year construction/ improvements 1984      
Date acquired Oct. 28, 2011      
Dartmouth, Massachusetts Retail Location        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,450      
Land, initial cost 0      
Buildings & improvements, initial cost 4,236      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 0      
Buildings & improvements, total cost 4,236      
Total 4,236      
Accumulated depreciation 960      
Net real estate $ 3,276      
Year construction/ improvements 2011      
Date acquired Nov. 18, 2011      
Springfield, Missouri Retail Location        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 1,343      
Land, initial cost 0      
Buildings & improvements, initial cost 2,275      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 0      
Buildings & improvements, total cost 2,275      
Total 2,275      
Accumulated depreciation 662      
Net real estate $ 1,613      
Year construction/ improvements 2005      
Date acquired Dec. 13, 2011      
Pittsburgh, Pennsylvania Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,410      
Land, initial cost 281      
Buildings & improvements, initial cost 3,205      
Improvement costs capitalized subsequent to acquisition 743      
Land, total cost 281      
Buildings & improvements, total cost 3,948      
Total 4,229      
Accumulated depreciation 1,100      
Net real estate $ 3,129      
Year construction/ improvements 1968      
Date acquired Dec. 28, 2011      
Ashburn, Virginia Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 6,272      
Land, initial cost 706      
Buildings & improvements, initial cost 7,858      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 705      
Buildings & improvements, total cost 7,859      
Total 8,564      
Accumulated depreciation 2,059      
Net real estate $ 6,505      
Year construction/ improvements 2002      
Date acquired Jan. 25, 2012      
Ottumwa, Iowa Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,042      
Land, initial cost 212      
Buildings & improvements, initial cost 5,072      
Improvement costs capitalized subsequent to acquisition 310      
Land, total cost 212      
Buildings & improvements, total cost 5,382      
Total 5,594      
Accumulated depreciation 1,360      
Net real estate $ 4,234      
Year construction/ improvements 1970      
Date acquired May 30, 2012      
New Albany, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 7,319      
Land, initial cost 1,658      
Buildings & improvements, initial cost 8,746      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,658      
Buildings & improvements, total cost 8,746      
Total 10,404      
Accumulated depreciation 2,439      
Net real estate $ 7,965      
Year construction/ improvements 2007      
Date acquired Jun. 05, 2012      
Columbus, Georgia Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,927      
Land, initial cost 1,378      
Buildings & improvements, initial cost 4,520      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,378      
Buildings & improvements, total cost 4,520      
Total 5,898      
Accumulated depreciation 1,405      
Net real estate $ 4,493      
Year construction/ improvements 2012      
Date acquired Jun. 21, 2012      
Columbus, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,458      
Land, initial cost 542      
Buildings & improvements, initial cost 2,453      
Improvement costs capitalized subsequent to acquisition 134      
Land, total cost 542      
Buildings & improvements, total cost 2,587      
Total 3,129      
Accumulated depreciation 878      
Net real estate $ 2,251      
Year construction/ improvements 1981      
Date acquired Jun. 28, 2012      
Jupiter, Florida Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,160      
Buildings & improvements, initial cost 11,994      
Improvement costs capitalized subsequent to acquisition 34      
Land, total cost 1,160      
Buildings & improvements, total cost 12,028      
Total 13,188      
Accumulated depreciation 2,660      
Net real estate $ 10,528      
Year construction/ improvements 2011      
Date acquired Sep. 26, 2012      
Fort Worth, Texas Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 11,076      
Land, initial cost 963      
Buildings & improvements, initial cost 15,647      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 963      
Buildings & improvements, total cost 15,647      
Total 16,610      
Accumulated depreciation 3,405      
Net real estate $ 13,205      
Year construction/ improvements 2005      
Date acquired Nov. 08, 2012      
Columbia, South Carolina Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 15,474      
Land, initial cost 1,905      
Buildings & improvements, initial cost 20,648      
Improvement costs capitalized subsequent to acquisition 438      
Land, total cost 1,905      
Buildings & improvements, total cost 21,086      
Total 22,991      
Accumulated depreciation 6,305      
Net real estate $ 16,686      
Year construction/ improvements 2010      
Date acquired Nov. 21, 2012      
Egg Harbor, New Jersey Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,060      
Land, initial cost 1,627      
Buildings & improvements, initial cost 3,017      
Improvement costs capitalized subsequent to acquisition 315      
Land, total cost 1,627      
Buildings & improvements, total cost 3,332      
Total 4,959      
Accumulated depreciation 836      
Net real estate $ 4,123      
Year construction/ improvements 1985      
Date acquired Mar. 28, 2013      
Vance, Alabama Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 457      
Buildings & improvements, initial cost 10,529      
Improvement costs capitalized subsequent to acquisition 6,692      
Land, total cost 457      
Buildings & improvements, total cost 17,221      
Total 17,678      
Accumulated depreciation 2,900      
Net real estate $ 14,778      
Year construction/ improvements 2013      
Date acquired May 09, 2013      
Blaine, Minnesota Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 7,351      
Land, initial cost 1,060      
Buildings & improvements, initial cost 10,518      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,060      
Buildings & improvements, total cost 10,518      
Total 11,578      
Accumulated depreciation 3,031      
Net real estate $ 8,547      
Year construction/ improvements 2009      
Date acquired May 10, 2013      
Austin, Texas Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 31,526      
Land, initial cost 2,330      
Buildings & improvements, initial cost 44,021      
Improvement costs capitalized subsequent to acquisition 122      
Land, total cost 2,330      
Buildings & improvements, total cost 44,143      
Total 46,473      
Accumulated depreciation 14,892      
Net real estate $ 31,581      
Year construction/ improvements 1999      
Date acquired Jul. 09, 2013      
Allen, Texas Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 7,862      
Land, initial cost 2,699      
Buildings & improvements, initial cost 7,945      
Improvement costs capitalized subsequent to acquisition 1,335      
Land, total cost 2,699      
Buildings & improvements, total cost 9,280      
Total 11,979      
Accumulated depreciation 2,829      
Net real estate $ 9,150      
Year construction/ improvements 1998      
Date acquired Jul. 10, 2013      
Englewood, Colorado Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 10,022      
Land, initial cost 1,503      
Buildings & improvements, initial cost 11,739      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,503      
Buildings & improvements, total cost 11,739      
Total 13,242      
Accumulated depreciation 3,134      
Net real estate $ 10,108      
Year construction/ improvements 2008      
Date acquired Dec. 11, 2013      
Novi, Michigan Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,815      
Land, initial cost 352      
Buildings & improvements, initial cost 5,626      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 352      
Buildings & improvements, total cost 5,626      
Total 5,978      
Accumulated depreciation 1,170      
Net real estate $ 4,808      
Year construction/ improvements 1988      
Date acquired Dec. 27, 2013      
Allen, Texas Retail Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,806      
Land, initial cost 874      
Buildings & improvements, initial cost 3,634      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 874      
Buildings & improvements, total cost 3,634      
Total 4,508      
Accumulated depreciation 723      
Net real estate $ 3,785      
Year construction/ improvements 2004      
Date acquired Mar. 27, 2014      
Colleyville, Texas Retail Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,591      
Land, initial cost 1,277      
Buildings & improvements, initial cost 2,424      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,277      
Buildings & improvements, total cost 2,424      
Total 3,701      
Accumulated depreciation 525      
Net real estate $ 3,176      
Year construction/ improvements 2000      
Date acquired Mar. 27, 2014      
Rancho Cordova, California Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,575      
Land, initial cost 752      
Buildings & improvements, initial cost 6,176      
Improvement costs capitalized subsequent to acquisition 301      
Land, total cost 752      
Buildings & improvements, total cost 6,477      
Total 7,229      
Accumulated depreciation 1,270      
Net real estate $ 5,959      
Year construction/ improvements 1986      
Date acquired Apr. 22, 2014      
Coppell, Texas Retail Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,985      
Land, initial cost 1,448      
Buildings & improvements, initial cost 3,349      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,448      
Buildings & improvements, total cost 3,349      
Total 4,797      
Accumulated depreciation 650      
Net real estate $ 4,147      
Year construction/ improvements 2005      
Date acquired May 08, 2014      
Columbus, Ohio (3) Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 990      
Buildings & improvements, initial cost 8,017      
Improvement costs capitalized subsequent to acquisition 1,835      
Land, total cost 990      
Buildings & improvements, total cost 9,852      
Total 10,842      
Accumulated depreciation 2,582      
Net real estate $ 8,260      
Year construction/ improvements 1986      
Date acquired May 13, 2014      
Taylor, Pennsylvania Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 21,600      
Land, initial cost 3,101      
Buildings & improvements, initial cost 25,405      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 3,101      
Buildings & improvements, total cost 25,405      
Total 28,506      
Accumulated depreciation 4,477      
Net real estate $ 24,029      
Year construction/ improvements 2000      
Year construction/improvements one 2006      
Date acquired Jun. 09, 2014      
Aurora, Colorado Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 2,882      
Buildings & improvements, initial cost 3,917      
Improvement costs capitalized subsequent to acquisition 96      
Land, total cost 2,882      
Buildings & improvements, total cost 4,013      
Total 6,895      
Accumulated depreciation 898      
Net real estate $ 5,997      
Year construction/ improvements 1983      
Date acquired Jul. 01, 2014      
Indianapolis, Indiana Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 5,591      
Land, initial cost 502      
Buildings & improvements, initial cost 6,422      
Improvement costs capitalized subsequent to acquisition 1,727      
Land, total cost 498      
Buildings & improvements, total cost 8,153      
Total 8,651      
Accumulated depreciation 1,746      
Net real estate $ 6,905      
Year construction/ improvements 1981      
Year construction/improvements one 2014      
Date acquired Sep. 03, 2014      
Denver, Colorado Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,621      
Buildings & improvements, initial cost 7,071      
Improvement costs capitalized subsequent to acquisition 243      
Land, total cost 1,621      
Buildings & improvements, total cost 7,314      
Total 8,935      
Accumulated depreciation 1,423      
Net real estate $ 7,512      
Year construction/ improvements 1985      
Date acquired Oct. 31, 2014      
Monroe, Michigan Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 9,856      
Land, initial cost 658      
Buildings & improvements, initial cost 14,607      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 657      
Buildings & improvements, total cost 14,608      
Total 15,265      
Accumulated depreciation 2,301      
Net real estate $ 12,964      
Year construction/ improvements 2004      
Date acquired Dec. 23, 2014      
Monroe, Michigan Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 6,899      
Land, initial cost 460      
Buildings & improvements, initial cost 10,225      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 460      
Buildings & improvements, total cost 10,225      
Total 10,685      
Accumulated depreciation 1,610      
Net real estate $ 9,075      
Year construction/ improvements 2004      
Date acquired Dec. 23, 2014      
Richardson, Texas Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 13,296      
Land, initial cost 2,728      
Buildings & improvements, initial cost 15,372      
Improvement costs capitalized subsequent to acquisition 643      
Land, total cost 2,728      
Buildings & improvements, total cost 16,015      
Total 18,743      
Accumulated depreciation 3,349      
Net real estate $ 15,394      
Year construction/ improvements 1985      
Year construction/improvements one 2008      
Date acquired Mar. 06, 2015      
Birmingham, Alabama Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 650      
Buildings & improvements, initial cost 2,034      
Improvement costs capitalized subsequent to acquisition 60      
Land, total cost 650      
Buildings & improvements, total cost 2,094      
Total 2,744      
Accumulated depreciation 477      
Net real estate $ 2,267      
Year construction/ improvements 1982      
Year construction/improvements one 2010      
Date acquired Mar. 20, 2015      
Dublin, Ohio Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,951      
Land, initial cost 1,338      
Buildings & improvements, initial cost 5,058      
Improvement costs capitalized subsequent to acquisition 886      
Land, total cost 1,338      
Buildings & improvements, total cost 5,944      
Total 7,282      
Accumulated depreciation 1,118      
Net real estate $ 6,164      
Year construction/ improvements 1980      
Date acquired May 28, 2015      
Draper, Utah Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 12,184      
Land, initial cost 3,248      
Buildings & improvements, initial cost 13,129      
Improvement costs capitalized subsequent to acquisition 74      
Land, total cost 3,248      
Buildings & improvements, total cost 13,203      
Total 16,451      
Accumulated depreciation 2,459      
Net real estate $ 13,992      
Year construction/ improvements 2008      
Date acquired May 29, 2015      
Hapeville, Georgia Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 6,986      
Land, initial cost 2,272      
Buildings & improvements, initial cost 8,778      
Improvement costs capitalized subsequent to acquisition 263      
Land, total cost 2,272      
Buildings & improvements, total cost 9,041      
Total 11,313      
Accumulated depreciation 1,479      
Net real estate $ 9,834      
Year construction/ improvements 1999      
Year construction/improvements one 2007      
Date acquired Jul. 15, 2015      
Villa Rica, Georgia Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,546      
Land, initial cost 293      
Buildings & improvements, initial cost 5,277      
Improvement costs capitalized subsequent to acquisition 18      
Land, total cost 293      
Buildings & improvements, total cost 5,295      
Total 5,588      
Accumulated depreciation 832      
Net real estate $ 4,756      
Year construction/ improvements 2000      
Year construction/improvements one 2014      
Date acquired Oct. 20, 2015      
Taylorsville, Utah Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 9,112      
Land, initial cost 3,008      
Buildings & improvements, initial cost 10,659      
Improvement costs capitalized subsequent to acquisition 435      
Land, total cost 3,008      
Buildings & improvements, total cost 11,094      
Total 14,102      
Accumulated depreciation 2,108      
Net real estate $ 11,994      
Year construction/ improvements 1997      
Date acquired May 26, 2016      
Fort Lauderdale, Florida Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 13,026      
Land, initial cost 4,117      
Buildings & improvements, initial cost 15,516      
Improvement costs capitalized subsequent to acquisition 2,932      
Land, total cost 4,117      
Buildings & improvements, total cost 18,448      
Total 22,565      
Accumulated depreciation 2,735      
Net real estate $ 19,830      
Year construction/ improvements 1984      
Date acquired Sep. 12, 2016      
King of Prussia, Pennsylvania Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 14,612      
Land, initial cost 3,681      
Buildings & improvements, initial cost 15,739      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 3,681      
Buildings & improvements, total cost 15,739      
Total 19,420      
Accumulated depreciation 2,182      
Net real estate $ 17,238      
Year construction/ improvements 2001      
Date acquired Dec. 14, 2016      
Conshohocken Pennsylvania Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 10,437      
Land, initial cost 1,996      
Buildings & improvements, initial cost 10,880      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,996      
Buildings & improvements, total cost 10,880      
Total 12,876      
Accumulated depreciation 1,097      
Net real estate $ 11,779      
Year construction/ improvements 1996      
Date acquired Jun. 22, 2017      
Philadelphia Pennsylvania, Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 14,924      
Land, initial cost 5,896      
Buildings & improvements, initial cost 16,282      
Improvement costs capitalized subsequent to acquisition 10      
Land, total cost 5,906      
Buildings & improvements, total cost 16,282      
Total 22,188      
Accumulated depreciation 1,903      
Net real estate $ 20,285      
Year construction/ improvements 1994      
Year construction/improvements one 2011      
Date acquired Jul. 07, 2017      
Maitland Florida Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 15,789      
Land, initial cost 3,073      
Buildings & improvements, initial cost 19,661      
Improvement costs capitalized subsequent to acquisition 431      
Land, total cost 3,091      
Buildings & improvements, total cost 20,074      
Total 23,165      
Accumulated depreciation 2,615      
Net real estate $ 20,550      
Year construction/ improvements 1998      
Date acquired Jul. 31, 2017      
Maitland Florida Office Building Three        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 7,916      
Land, initial cost 2,095      
Buildings & improvements, initial cost 9,339      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 2,095      
Buildings & improvements, total cost 9,339      
Total 11,434      
Accumulated depreciation 940      
Net real estate $ 10,494      
Year construction/ improvements 1999      
Date acquired Jul. 31, 2017      
Columbus Ohio Office Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 9,114      
Land, initial cost 1,926      
Buildings & improvements, initial cost 11,410      
Improvement costs capitalized subsequent to acquisition (1)      
Land, total cost 1,925      
Buildings & improvements, total cost 11,410      
Total 13,335      
Accumulated depreciation 1,235      
Net real estate $ 12,100      
Year construction/ improvements 2007      
Date acquired Dec. 01, 2017      
Salt Lake City Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 4,446      
Buildings & improvements, initial cost 9,938      
Improvement costs capitalized subsequent to acquisition 771      
Land, total cost 4,446      
Buildings & improvements, total cost 10,709      
Total 15,155      
Accumulated depreciation 1,021      
Net real estate $ 14,134      
Year construction/ improvements 2007      
Date acquired Dec. 01, 2017      
Vance, Alabama Industrial Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 459      
Buildings & improvements, initial cost 12,224      
Improvement costs capitalized subsequent to acquisition 36      
Land, total cost 469      
Buildings & improvements, total cost 12,250      
Total 12,719      
Accumulated depreciation 811      
Net real estate $ 11,908      
Year construction/ improvements 2018      
Date acquired Mar. 09, 2018      
Columbus, Ohio Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,634      
Land, initial cost 681      
Buildings & improvements, initial cost 6,401      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 681      
Buildings & improvements, total cost 6,401      
Total 7,082      
Accumulated depreciation 424      
Net real estate $ 6,658      
Year construction/ improvements 1990      
Date acquired Sep. 20, 2018      
Detroit, Michigan Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 6,660      
Land, initial cost 1,458      
Buildings & improvements, initial cost 10,092      
Improvement costs capitalized subsequent to acquisition 10      
Land, total cost 1,468      
Buildings & improvements, total cost 10,092      
Total 11,560      
Accumulated depreciation 428      
Net real estate $ 11,132      
Year construction/ improvements 1997      
Date acquired Oct. 30, 2018      
Detroit, Michigan Industrial Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 662      
Buildings & improvements, initial cost 6,681      
Improvement costs capitalized subsequent to acquisition 10      
Land, total cost 672      
Buildings & improvements, total cost 6,681      
Total 7,353      
Accumulated depreciation 288      
Net real estate $ 7,065      
Year construction/ improvements 2002      
Year construction/improvements one 2016      
Date acquired Oct. 30, 2018      
Lake Mary, Florida Office Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 10,502      
Land, initial cost 3,018      
Buildings & improvements, initial cost 11,756      
Improvement costs capitalized subsequent to acquisition 2      
Land, total cost 3,020      
Buildings & improvements, total cost 11,756      
Total 14,776      
Accumulated depreciation 514      
Net real estate $ 14,262      
Year construction/ improvements 1997      
Year construction/improvements one 2018      
Date acquired Dec. 27, 2018      
Moorestown, New Jersey Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 471      
Buildings & improvements, initial cost 1,825      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 471      
Buildings & improvements, total cost 1,825      
Total 2,296      
Accumulated depreciation 101      
Net real estate $ 2,195      
Year construction/ improvements 1991      
Date acquired Feb. 08, 2019      
Indianapolis, Indiana Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 255      
Buildings & improvements, initial cost 2,809      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 255      
Buildings & improvements, total cost 2,809      
Total 3,064      
Accumulated depreciation 92      
Net real estate $ 2,972      
Year construction/ improvements 1989      
Year construction/improvements one 2019      
Date acquired Feb. 28, 2019      
Ocala, Florida Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,286      
Buildings & improvements, initial cost 8,535      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,286      
Buildings & improvements, total cost 8,535      
Total 9,821      
Accumulated depreciation 214      
Net real estate $ 9,607      
Year construction/ improvements 2001      
Date acquired Apr. 05, 2019      
Ocala, Florida Industrial Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 725      
Buildings & improvements, initial cost 4,814      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 725      
Buildings & improvements, total cost 4,814      
Total 5,539      
Accumulated depreciation 121      
Net real estate $ 5,418      
Year construction/ improvements 1965      
Year construction/improvements one 2007      
Date acquired Apr. 05, 2019      
Delaware, Ohio Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 316      
Buildings & improvements, initial cost 2,355      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 316      
Buildings & improvements, total cost 2,355      
Total 2,671      
Accumulated depreciation 66      
Net real estate $ 2,605      
Year construction/ improvements 2005      
Date acquired Apr. 30, 2019      
Tifton, Georgia Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 8,753      
Land, initial cost 0      
Buildings & improvements, initial cost 15,190      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 0      
Buildings & improvements, total cost 15,190      
Total 15,190      
Accumulated depreciation 274      
Net real estate $ 14,916      
Year construction/ improvements 1995      
Year construction/improvements one 2003      
Date acquired Jun. 18, 2019      
Denton, Texas Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,497      
Buildings & improvements, initial cost 4,151      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,496      
Buildings & improvements, total cost 4,152      
Total 5,648      
Accumulated depreciation 78      
Net real estate $ 5,570      
Year construction/ improvements 2012      
Date acquired Jul. 30, 2019      
Temple, Texas Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 200      
Buildings & improvements, initial cost 4,335      
Improvement costs capitalized subsequent to acquisition 65      
Land, total cost 200      
Buildings & improvements, total cost 4,400      
Total 4,600      
Accumulated depreciation 47      
Net real estate $ 4,553      
Year construction/ improvements 1973      
Year construction/improvements one 2006      
Date acquired Sep. 26, 2019      
Temple, Texas Industrial Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 296      
Buildings & improvements, initial cost 6,425      
Improvement costs capitalized subsequent to acquisition 98      
Land, total cost 296      
Buildings & improvements, total cost 6,523      
Total 6,819      
Accumulated depreciation 70      
Net real estate $ 6,749      
Year construction/ improvements 1978      
Year construction/improvements one 2006      
Date acquired Sep. 26, 2019      
Indianapolis, Indiana Industrial Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 0      
Land, initial cost 1,158      
Buildings & improvements, initial cost 5,162      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 1,158      
Buildings & improvements, total cost 5,162      
Total 6,320      
Accumulated depreciation 41      
Net real estate $ 6,279      
Year construction/ improvements 1967      
Year construction/improvements one 1998      
Date acquired Nov. 14, 2019      
Jackson, Tennessee Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,770      
Land, initial cost 311      
Buildings & improvements, initial cost 7,199      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 311      
Buildings & improvements, total cost 7,199      
Total 7,510      
Accumulated depreciation 10      
Net real estate $ 7,500      
Year construction/ improvements 2019      
Date acquired Dec. 16, 2019      
Carrollton, Georgia Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 4,240      
Land, initial cost 291      
Buildings & improvements, initial cost 6,720      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 292      
Buildings & improvements, total cost 6,719      
Total 7,011      
Accumulated depreciation 9      
Net real estate $ 7,002      
Year construction/ improvements 2015      
Year construction/improvements one 2019      
Date acquired Dec. 17, 2019      
New Orleans, Louisiana Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,800      
Land, initial cost 2,168      
Buildings & improvements, initial cost 4,667      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 2,168      
Buildings & improvements, total cost 4,667      
Total 6,835      
Accumulated depreciation 10      
Net real estate $ 6,825      
Year construction/ improvements 1975      
Date acquired Dec. 17, 2019      
San Antonio, Texas Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,900      
Land, initial cost 775      
Buildings & improvements, initial cost 6,877      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 775      
Buildings & improvements, total cost 6,877      
Total 7,652      
Accumulated depreciation 10      
Net real estate $ 7,642      
Year construction/ improvements 1985      
Date acquired Dec. 17, 2019      
Port Allen, Louisiana Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 2,890      
Land, initial cost 292      
Buildings & improvements, initial cost 3,411      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 293      
Buildings & improvements, total cost 3,410      
Total 3,703      
Accumulated depreciation 6      
Net real estate $ 3,697      
Year construction/ improvements 1983      
Year construction/improvements one 2005      
Date acquired Dec. 17, 2019      
Albuquerque, New Mexico Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 1,870      
Land, initial cost 673      
Buildings & improvements, initial cost 2,291      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 674      
Buildings & improvements, total cost 2,290      
Total 2,964      
Accumulated depreciation 4      
Net real estate $ 2,960      
Year construction/ improvements 1998      
Year construction/improvements one 2017      
Date acquired Dec. 17, 2019      
Tucson, Arizona Industrial Building        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,500      
Land, initial cost 819      
Buildings & improvements, initial cost 4,636      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 819      
Buildings & improvements, total cost 4,636      
Total 5,455      
Accumulated depreciation 7      
Net real estate $ 5,448      
Year construction/ improvements 1987      
Year construction/improvements one 1995      
Year construction/improvements two 2005      
Date acquired Dec. 17, 2019      
Albuquerque, New Mexico Industrial Building Two        
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]        
Encumbrances, initial cost $ 3,540      
Land, initial cost 818      
Buildings & improvements, initial cost 5,219      
Improvement costs capitalized subsequent to acquisition 0      
Land, total cost 819      
Buildings & improvements, total cost 5,218      
Total 6,037      
Accumulated depreciation 8      
Net real estate $ 6,029      
Year construction/ improvements 2000      
Year construction/improvements one 2018      
Date acquired Dec. 17, 2019