Income Taxes - Expense (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2022	Dec. 31, 2020	Dec. 31, 2019
Current:
U.S. federal	$ 5,212		$ 362	$ 9,465	$ 164
U.S. state	1,267		(5)	3,834	419
Non-U.S.	804		1,444	1,065	453
Total current	7,283		1,801	14,364	1,036
Deferred:
U.S. federal	365		(6,881)	(517)	(9,431)
U.S. state	84		(940)	(1,629)	(540)
Non-U.S.	(137)		(6)	(20)	(602)
Total deferred	312		(7,827)	(2,166)	(10,573)
Total income tax expense (benefit)	$ 7,595	$ (3,446)	$ (6,026)	$ 12,198	$ (9,537)