Leases - Components of Net Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Commitments [Line Items]
Operating Lease, Cost	$ 11,073	$ 10,851
Variable Lease, Cost	1,732	1,805
Sublease Income	(1,454)	(1,182)
Net lease, Cost	$ 11,351	$ 11,474