Revenue - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for doubtful accounts, balance at beginning of period	$ 25,354	$ 19,782
Bad debt expense	3,161	22,251
Actual write-offs	(3,849)	(16,679)
Allowance for doubtful accounts, balance at end of period	$ 24,666	$ 25,354