Annual report pursuant to Section 13 and 15(d)

Schedule III - Real Estate and Accumulated Depreciation - Change in Balance of Accumulated Depreciation (Parenthetical) (Detail)

v3.3.1.900
Schedule III - Real Estate and Accumulated Depreciation - Change in Balance of Accumulated Depreciation (Parenthetical) (Detail) - Real Estate Held for Sale [Member]
$ in Thousands
Dec. 31, 2015
USD ($)
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Real estate held for sale, accumulated depreciation $ 846
Dayton, Ohio Office Building [Member]  
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]  
Real estate held for sale, accumulated depreciation $ 846