Commitments and Contingencies Operating Lease Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Contractual Commitments, Commitment [Line Items]
Lease cost	$ 25,268	$ 22,759	$ 23,540
Variable lease cost	3,526	3,550	3,580
Sublease income	(583)	(781)	(953)
Total lease costs	28,361	25,735	26,420
Facility Leases
Contractual Commitments, Commitment [Line Items]
Short-term lease cost	$ 150	$ 207	$ 253