Supplemental Cash Flow Information - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Continuing operations
Cash and cash equivalents	$ 201,099	$ 44,226	$ 139,797	$ 80,398
Restricted cash	53,699	67,206	83,156	13,385
Cash, cash equivalents and restricted cash	254,798	111,432	222,953	93,783
Discontinued operations
Cash and cash equivalents	14,005	53,085	57,322	63,834
Restricted cash	3	17,168	19,263	27,040
Cash, cash equivalents and restricted cash	14,008	70,253	76,585	90,874
Cash and cash equivalents, total	215,104	97,311	197,119	144,232
Restricted cash, total	53,702	84,374	102,419	40,425
Cash, cash equivalents and restricted cash, total	$ 268,806	$ 181,685	$ 299,538	$ 184,657