Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	6 years 3 months 18 days
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities
Operating lease right of use assets	$ 17,100
Operating lease liabilities	$ 24,805
Incremental borrowing rate	4.73%
Lease cost	$ 5,100	$ 5,100	$ 6,900
Operating cash flows from operating leases	$ 5,900
Minimum
Lessee, Lease, Description [Line Items]
Remaining initial lease term	3 months 18 days
Term of options to extend	3 years
Maximum
Lessee, Lease, Description [Line Items]
Remaining initial lease term	9 years 3 months 18 days
Term of options to extend	15 years