Schedule III - Change in Accumulated Depreciation (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Real Estate And Accumulated Depreciation Disclosure [Abstract] | |||
| Balance, beginning of period | $ 206,989 | $ 148,383 | $ 105,703 |
| Acquisitions and building improvements | 83,797 | 66,156 | 49,832 |
| Dispositions | (19,317) | (7,376) | (6,942) |
| Impairment | (425) | (174) | (210) |
| Balance, end of period | $ 271,044 | $ 206,989 | $ 148,383 |