Supplemental Cash Flow Information - Summary of Cash Paid for Interest and Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash paid for interest and income taxes
Interest	$ 57,043	$ 57,475	$ 80,069
Income taxes	10,964	7,808	4,635
Cash and cash equivalents	140,113	200,227
Restricted cash	11,578	13,556
Total	$ 151,691	$ 213,783	$ 2,287	$ 480,047