Financing Receivables - Allowance for Financing Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning Balance	$ 1,489	$ 2,971
Provision	481	1,632
Charge-offs	(1,248)	(3,114)
Recoveries	0	0
Ending Balance	$ 722	$ 1,489