Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Weighted average interest rate of debt outstanding.

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- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Schedule of Debt Outstanding (Parenthetical) (Detail) - USD ($) $ in Thousands			1 Months Ended			12 Months Ended
	Dec. 18, 2019	Apr. 17, 2018	Oct. 31, 2017	Sep. 30, 2015	Apr. 30, 2013	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Revolving Credit Facility maturity date		Apr. 30, 2023
Unamortized debt issuance costs						$ 12,766	$ 14,993
Term Loan A Due in April 2023
Debt Instrument [Line Items]
Debt interest rate						1.60%	3.30%
Debt maturity date		Apr. 30, 2023				Apr. 30, 2023
Interest payable dates						Interest payable periodically at variable interest rates.
Unamortized debt issuance costs						$ 100	$ 100
Term Loan B Due in December 2024
Debt Instrument [Line Items]
Debt interest rate						5.50%	6.30%
Debt maturity date	Dec. 31, 2024					Dec. 31, 2024
Interest payable dates						Interest payable periodically at variable interest rates.
Unamortized debt issuance costs						$ 4,100	$ 4,600
Senior Notes 4.625% Due 2023
Debt Instrument [Line Items]
Stated interest rate					4.625%	4.625%
Debt maturity date					May 01, 2023	May 31, 2023
Unamortized debt issuance costs						$ 1,500	2,100
Senior Notes 5.0% Due 2022
Debt Instrument [Line Items]
Stated interest rate				5.00%		5.00%
Debt maturity date				Oct. 15, 2022		Oct. 31, 2022
Unamortized debt issuance costs						$ 800	1,300
Senior Notes 4.75% Due 2027
Debt Instrument [Line Items]
Stated interest rate			4.75%			4.75%
Debt maturity date			Oct. 15, 2027			Oct. 31, 2027
Unamortized debt issuance costs						$ 2,700	3,100
Capital Commerce Center Non-Recourse Mortgage Note 4.5% Due 2033
Debt Instrument [Line Items]
Stated interest rate						4.50%
Debt maturity date						Jan. 31, 2033
Unamortized debt issuance costs						$ 300	300
Lansing Correctional Center Non Recourse Mortgage Note 4.43% Due 2040
Debt Instrument [Line Items]
Stated interest rate						4.43%
Debt maturity date						Jan. 31, 2040
Unamortized debt issuance costs						$ 3,100	3,300
SSA Baltimore Non Recourse Mortgage Note 4.5% Due 2034
Debt Instrument [Line Items]
Stated interest rate						4.50%
Debt maturity date						Feb. 28, 2034
Unamortized debt issuance costs						$ 200	$ 200
Revolving Credit Facility \| Revolving Credit Facility Due in April 2023
Debt Instrument [Line Items]
Revolving Credit Facility maturity date						Apr. 30, 2023
Weighted average rate						1.70%	3.30%
Interest payable dates						Interest payable periodically at variable interest rates.