Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Taxes [Line Items]
Minimum Distribution Percentage of Taxable Income to Qualify for Real Estate Investment Trust	90.00%
Income tax expense	$ 3,776,000	$ 2,484,000
Lease expiration term	20 years
Liabilities for uncertain tax positions	$ 0		$ 0
Lansing Correctional Facility
Income Taxes [Line Items]
Income tax expense deferred during construction period	3,100,000
Deferred tax asset revalued upon conversion of TRS to QRS	$ 0