Schedule III - Real Estate Assets and Accumulated Depreciation Summary of Transactions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022		Dec. 31, 2021	Dec. 31, 2020
SEC Schedule III, Real Estate Assets and Accumulated Depreciation [Line Items]
Investment in Real Estate, balance at beginning of period	$ 3,352,942		$ 3,595,278	$ 3,605,137
Additions through capital expenditures	41,449		27,217	29,142
Acquisitions	0			82,324
Asset impairments	(4,241)		(3,335)	(10,154)
Disposals/Other	(101,436)		(266,218)	(111,171)
Investment in Real Estate, balance at end of period	3,288,714	[1]	3,352,942	3,595,278
Accumulated Depreciation, balance at beginning of period	(1,194,051)		(1,128,563)	(1,053,670)
Depreciation	(81,937)		(81,693)	(89,008)
Disposals/Other	31,944		16,205	14,115
Accumulated Depreciation, balance at end of period	$ (1,244,044)	[2]	$ (1,194,051)	$ (1,128,563)

[1] The aggregate cost of properties for federal income tax purposes is approximately $3.7 billion at December 31, 2022.

[2] Depreciation is calculated using estimated useful lives of depreciable assets up to 50 years for prison facilities.