Revenues - Contract Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue, Contract Balances [Roll Forward]
Balance at beginning of period	$ 2,796	$ 1,191
Services transferred to customers	5,374	3,934
Transfers to accounts receivable	(6,455)	(2,329)
Balance at end of period	$ 1,715	$ 2,796