Lease Commitments - Supplemental Lease Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Balance Sheet
Right-of-use asset, operating lease	$ 4,308
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant and Equipment, Net
Lease liability, operating lease	$ 4,609
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities
Right-of-use asset, finance lease	$ 1,927
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant and Equipment, Net
Lease liability, finance lease	$ 2,327
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities
Lease cost information
Weighted average lease term - Operating Leases	8 years 3 months
Weighted average lease term - Finance Leases	13 years 10 months 2 days
Weighted average discount rate - Operating Leases	2.81%
Weighted average discount rate - Finance Leases	2.84%
Operating outgoing cash flows from operating leases	$ 222
Operating outgoing cash flows from finance leases	45
Premises and Equipment
Income Statement
Operating lease cost	234
Borrowings
Income Statement
Finance lease cost	$ 32