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

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Debt (Nonrecourse Debt) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Debt Instrument [Line Items]
Long term debt	$ 2,494,987,000	$ 2,561,881,000
Restricted cash and cash equivalents - current	29,317,000		$ 27,865,000
Non Recourse Debt 2011 Revenue Bonds
Debt Instrument [Line Items]
Long term debt	$ 54,400,000
Stated interest rate	5.25%
Non Recourse Debt 2011 Revenue Bonds \| Northwest Detention Center
Debt Instrument [Line Items]
Non-recourse debt	$ 8,100,000
Non Recourse Debt Northwest Detention Center \| Northwest Detention Center
Debt Instrument [Line Items]
Restricted cash and cash equivalents - current	$ 6,700