Leases - Narrative (Details)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Lease renewal term	5 years
Lease termination period	1 year
Weighted average remaining lease term	11 years 7 months 6 days	12 years 3 months 18 days
Weighted average discount rate	3.34%	3.34%
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms	12 years