Commitments and Contingencies Operating Lease Obligations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021		Mar. 31, 2020
Contractual Commitments, Commitment [Line Items]
Lease cost	$ 5,770		$ 5,685
Variable lease cost	906		788
Sublease income	(160)		(216)
Total lease costs	6,549		6,403
Facility Leases
Contractual Commitments, Commitment [Line Items]
Short-term lease cost	$ 33	[1],[2]	$ 146

[1] During the three months ended March 31, 2021, the Company recognized an increase of $5.3 million of operating right-of-use assets and leases liabilities related to for facility leases.

[2] The Company has entered into various agreements to sublease certain of its premises.