Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Fair Value of Acquired Asset sand Assumed Liabilities (Detail)

v2.4.0.8
Real Estate and Intangible Assets - Fair Value of Acquired Asset sand Assumed Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Loans At Acquisition Date [Line Items]    
Total Purchase Price $ 131,188 $ 107,165
Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 5,650  
Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 13,388  
Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 14,450  
Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 57,000  
Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 15,150  
Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   10,775
Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   7,100
New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   13,333
Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   7,320
Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   4,037
Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   15,500
Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   19,950
Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price   29,150
Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 18,250  
Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Total Purchase Price 7,300  
Customer Relationships [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 9,069 5,946
Customer Relationships [Member] | Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 259  
Customer Relationships [Member] | Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 627  
Customer Relationships [Member] | Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 816  
Customer Relationships [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 3,793  
Customer Relationships [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,499  
Customer Relationships [Member] | Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   499
Customer Relationships [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   499
Customer Relationships [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   903
Customer Relationships [Member] | Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   375
Customer Relationships [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   325
Customer Relationships [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   909
Customer Relationships [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   517
Customer Relationships [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,919
Customer Relationships [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,850  
Customer Relationships [Member] | Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 225  
Above Market Leases [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 336 894
Above Market Leases [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 336  
Above Market Leases [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   47
Above Market Leases [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   113
Above Market Leases [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   734
Below Market Leases [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired (1,224) (107)
Below Market Leases [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired (1,168)  
Below Market Leases [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   (107)
Below Market Leases [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired (56)  
Discount/(Premium) on Assumed Debt [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   (1,730)
Discount/(Premium) on Assumed Debt [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   (867)
Discount/(Premium) on Assumed Debt [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   (863)
Land [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 10,028 8,524
Land [Member] | Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,627  
Land [Member] | Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 457  
Land [Member] | Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,060  
Land [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 2,330  
Land [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 2,699  
Land [Member] | Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   706
Land [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   212
Land [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,658
Land [Member] | Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,378
Land [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   542
Land [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,160
Land [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   963
Land [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,905
Land [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,503  
Land [Member] | Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 352  
Building [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 80,011 69,076
Building [Member] | Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 2,735  
Building [Member] | Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 9,721  
Building [Member] | Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 9,347  
Building [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 37,207  
Building [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 5,758  
Building [Member] | Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   6,551
Building [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   4,743
Building [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   7,511
Building [Member] | Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   3,894
Building [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,856
Building [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   11,249
Building [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   15,507
Building [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   17,765
Building [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 9,889  
Building [Member] | Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 5,354  
Tenant Improvements [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 13,385 7,862
Tenant Improvements [Member] | Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 282  
Tenant Improvements [Member] | Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 808  
Tenant Improvements [Member] | Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,172  
Tenant Improvements [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 6,814  
Tenant Improvements [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 2,187  
Tenant Improvements [Member] | Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,307
Tenant Improvements [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   329
Tenant Improvements [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,235
Tenant Improvements [Member] | Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   626
Tenant Improvements [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   597
Tenant Improvements [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   745
Tenant Improvements [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   140
Tenant Improvements [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   2,883
Tenant Improvements [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,850  
Tenant Improvements [Member] | Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 272  
In-place Leases [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 13,358 9,467
In-place Leases [Member] | Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 558  
In-place Leases [Member] | Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,097  
In-place Leases [Member] | Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,361  
In-place Leases [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 6,118  
In-place Leases [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,525  
In-place Leases [Member] | Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   804
In-place Leases [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   940
In-place Leases [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,122
In-place Leases [Member] | Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   574
In-place Leases [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   391
In-place Leases [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,603
In-place Leases [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,579
In-place Leases [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   2,454
In-place Leases [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 2,036  
In-place Leases [Member] | Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 663  
Leasing Costs [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 6,225 7,233
Leasing Costs [Member] | Egg Harbor Township, NJ [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 189  
Leasing Costs [Member] | Vance, AL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 678  
Leasing Costs [Member] | Blaine, MN [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 694  
Leasing Costs [Member] | Austin, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,906  
Leasing Costs [Member] | Allen, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,146  
Leasing Costs [Member] | Ashburn, VA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   908
Leasing Costs [Member] | Ottumwa, IA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   484
Leasing Costs [Member] | New Albany, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   857
Leasing Costs [Member] | Columbus, GA [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   473
Leasing Costs [Member] | Columbus, OH [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   213
Leasing Costs [Member] | Jupiter, FL [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   701
Leasing Costs [Member] | Fort Worth, TX [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   2,107
Leasing Costs [Member] | Columbia, SC [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired   1,490
Leasing Costs [Member] | Englewood, CO [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired 1,178  
Leasing Costs [Member] | Novi, MI [Member]
   
Loans At Acquisition Date [Line Items]    
Fair value of acquired assets related to the properties acquired $ 434