Accounts Receivable, Net - Schedule of Accounts Receivables Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Trade accounts receivable	$ 190,710	$ 167,575
Unbilled revenue, at net realizable value	67,616	63,494
Total accounts receivable	258,326	231,069
Allowance for doubtful accounts	(16,158)	(14,894)	$ (14,379)	$ (13,389)
Accounts receivable, net	$ 242,168	$ 216,175