Financial Guarantee Liability - Summary of Changes on Estimated Liability Under Guarantee Liability (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Guaranty LIability:
Beginning balance	$ 25,989	$ 29,581	$ 29,581
Provision for expected credit losses	195	$ (1,600)	(3,592)
Ending balance	$ 26,184		$ 25,989