Supplemental Cash Flow Information - Summary of cash equivalents and restricted cash (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Continuing operations
Cash and cash equivalents	$ 158,287	$ 44,226	$ 80,398	$ 53,979
Restricted cash	53,454	67,206	13,385	7,166
Cash, cash equivalents and restricted cash	211,741	111,432	93,783	61,145
Discontinued operations
Cash and cash equivalents	7,707	53,085	63,834	56,811
Restricted cash	0	17,168	27,040	21,890
Cash, cash equivalents and restricted cash	7,707	70,253	90,874	78,701
Cash and cash equivalents	165,994	97,311	144,232	110,790
Restricted cash	53,454	84,374	40,425	29,056
Cash, cash equivalents and restricted cash	$ 219,448	$ 181,685	$ 184,657	$ 139,846