Goodwill and Intangible Assets - Finite-lived Intangible Assets Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Finite-lived Intangible Assets, Gross [Roll Forward]
Intangible assets, beginning of period	$ 35,240	$ 35,240	$ 35,240
Additions	0
Total intangible assets, end of period	35,240		35,240
Accumulated Amortization [Roll Forward]
Accumulated amortization, January 1	(33,576)	(32,055)	(32,055)
Current year amortization	(310)	$ (380)	(1,521)
Total accumulated amortization	(33,886)		(33,576)
Net intangible assets
Net intangible assets, end of year	1,354		1,664
Infinite-lived intangible assets	6,892		6,892
Total net intangible assets	$ 8,246		$ 8,556