Real Estate Transactions - Additional Information (Detail) $ in Thousands, shares in Millions				3 Months Ended				12 Months Ended
	Dec. 23, 2020 USD ($) Property	Sep. 30, 2020 Facility Bed	Jan. 02, 2020 USD ($) Property shares	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($) ft² Facility Bed Property	Jun. 30, 2020 Bed	Mar. 31, 2020 USD ($)	Dec. 31, 2019 Bed	Apr. 30, 2021 Bed	Dec. 31, 2020 USD ($)
Facility Activations Developments And Closures [Line Items]
Number of properties acquired | Property	28		28
Purchase price of real estate			$ 83,200
Cash payments to acquire properties			7,700
Debt assumed on acquisition of property			$ 52,200				$ 52,217
Conversion holding period of operating partnership units			2 years
Operating partnership units description					one-for-one basis
Purchase price, net tangible assets			$ 77,400
Purchase price, identifiable intangible assets			7,500
Purchase price, tenant improvements			$ 4,900
Number of properties sold | Property	42
Real estate investment property aggregate selling price	$ 106,500
Net proceeds after the repayment of debt	27,800
Net loss on sale properties, after considering tax protection payments	$ 17,900
Property and equipment, net of accumulated depreciation					$ 2,333,340					$ 2,350,272
Number of real estate assets held for sale | Property					4
Net book value of property and equipment					$ 243,600
Deferred leasing costs and other assets					37,900
Asset impairments					1,308		536
Operating Expense					$ 332,884		362,315
Safety
Facility Activations Developments And Closures [Line Items]
Number of beds at the facility | Bed					70,000
Community
Facility Activations Developments And Closures [Line Items]
Number of beds at the center | Bed					5,000
Idled Correctional Facilities
Facility Activations Developments And Closures [Line Items]
Number of facility | Facility					5
Idled Non-Core Facilities | Safety
Facility Activations Developments And Closures [Line Items]
Number of facility | Facility					1
Number of beds at the facility | Bed					240
Net carrying value					$ 3,000
Idled Residential Reentry Facility | CoreCivic Properties
Facility Activations Developments And Closures [Line Items]
Number of facility | Facility					2
Net carrying value					$ 7,100
Area of facilities | ft²					49,000
Idled Residential Reentry Facility | CoreCivic Properties | Forecast
Facility Activations Developments And Closures [Line Items]
Asset impairments				$ 1,300
Idle Facilities
Facility Activations Developments And Closures [Line Items]
Operating Expense					$ 2,100		$ 1,900
Idle Facilities | Subsequent Event
Facility Activations Developments And Closures [Line Items]
Number of beds at the facility | Bed									90
Idle Facilities | Community
Facility Activations Developments And Closures [Line Items]
Number of facility | Facility		3
Net carrying value					$ 9,100
Number of beds at the center | Bed					650
Tulsa Transitional Center | Covid-19
Facility Activations Developments And Closures [Line Items]
Number of beds at the center | Bed		390
Oklahoma City Transitional Center | Covid-19
Facility Activations Developments And Closures [Line Items]
Number of closure bed | Bed						200
Turley Residential Center in Oklahoma
Facility Activations Developments And Closures [Line Items]
Number of closure bed | Bed								289
GRES
Facility Activations Developments And Closures [Line Items]
Number of properties acquired | Property			24
Class A Common interest shares issued | shares			1.3
Percentage of voting control			100.00%
Property and equipment, net of accumulated depreciation					$ 6,400