Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Changes in the Company's goodwill balances
Beginning balance	$ 776,356	$ 776,359
Impairment charges [1]	(21,146)
Foreign currency translation	40	(3)
Ending balance	755,250	776,356
U.S. Secure Services
Changes in the Company's goodwill balances
Beginning balance	316,366	316,366
Ending balance	316,366	316,366
GEO Care
Changes in the Company's goodwill balances
Beginning balance	459,589	459,589
Impairment charges [1]	(21,146)
Ending balance	438,443	459,589
International Services
Changes in the Company's goodwill balances
Beginning balance	401	404
Foreign currency translation	40	(3)
Ending balance	$ 441	$ 401

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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