Investment in Rental Property and Lease Arrangements - Summary of Amounts Reported as Lease Revenues Net on the Condensed Consolidated Statements of Income and Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
| Income Statement [Abstract] | ||||
| Contractual rental amounts billed for operating leases | $ 67,342 | $ 60,294 | $ 140,170 | $ 118,713 |
| Adjustment to recognize contractual operating lease billings on a straight-line basis | 8,276 | 5,269 | 9,941 | 10,440 |
| Variable rental amounts earned | 51 | 74 | ||
| Adjustment to revenue recognized for uncollectible rental amounts billed | (1,190) | (2,223) | (440) | |
| Total operating lease rental revenues | 74,479 | 65,563 | 147,962 | 128,713 |
| Earned income from direct financing leases | 855 | 1,004 | 1,842 | 2,009 |
| Operating expenses billed to tenants | 4,335 | 2,486 | 8,067 | 6,761 |
| Other income from real estate transactions | 702 | 731 | ||
| Total Lease revenues, net | $ 80,371 | $ 69,053 | $ 158,602 | $ 137,483 |