Lease Commitments - Supplemental Lease Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Balance Sheet
Right-of-use asset, operating lease	$ 4,504
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant and Equipment, Net
Lease liability, operating lease	$ 4,797
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities
Right-of-use asset, finance lease	$ 1,961
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Property, Plant and Equipment, Net
Lease liability, finance lease	$ 2,355
Finance Lease, Liability, Statement of Financial Position [Extensible List]	Other Liabilities
Lease cost information
Weighted average lease term - Operating Leases	8 years 4 months 21 days
Weighted average lease term - Finance Leases	14 years 1 month 2 days
Weighted average discount rate - Operating Leases	2.79%
Weighted average discount rate - Finance Leases	2.87%
Operating outgoing cash flows from operating leases	$ 516
Operating outgoing cash flows from finance leases	74
Premises and Equipment
Income Statement
Operating lease cost	511
Borrowings
Income Statement
Finance lease cost	$ 25