Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Schedule III - Real Estate and Accumulated Depreciation - Schedule of Change in Balance of Accumulated Depreciation (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]    
Balance, beginning of period $ 16,657 $ 11,066
Additions during period 8,230 6,180
Dispositions during period (836) (589)
Balance, end of period $ 24,051 $ 16,657