Premises, Equipment, and Leases - Weighted Average Remaining Lease Terms and Discount Rate (Details)	Dec. 31, 2021	Dec. 31, 2020
Weighted Average Remaining Lease Terms
Weighed average remaining lease terms - operating leases	12 years 4 months 13 days	12 years 5 months 26 days
Weighed average remaining lease terms - finance leases	10 years 7 months 9 days	11 years 5 months 12 days
Weighted Average Discount Rate
Weighted average discount rate - operating leases	2.35%	2.39%
Weighted average discount rate - finance leases	2.85%	3.05%