Leases - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Operating lease, weighted average remaining lease term	3 years 9 months 18 days	3 years 8 months 12 days
Operating lease, weighted average discount rate, percent	2.10%	2.10%
Operating lease payments, leases not yet commenced	$ 7,649
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term (less than)	1 year
Renewal term	1 year
Termination period (less than)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term (less than)	9 years
Renewal term	10 years
Termination period (less than)	5 years