Derivatives Statements of financial performance and financial position (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 262	$ 885
Borrowing Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	25,000	25,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	262	885
Loan Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	29,651	33,310
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0
Other Assets [Member] | Borrowing Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0
Other Assets [Member] | Loan Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	29,651	33,310
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(1,952)	(3,934)
Other Assets [Member] | Loan Derivative [Member] | Individually Immaterial Counterparties [Member]
Derivative [Line Items]
Derivative, Notional Amount	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0
Other Assets [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	29,651	33,310
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(1,952)	(3,934)
Other Liabilities [Member] | Borrowing Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	25,000	25,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	262	885
Other Liabilities [Member] | Loan Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0
Other Liabilities [Member] | Loan Derivative [Member] | Individually Immaterial Counterparties [Member]
Derivative [Line Items]
Derivative, Notional Amount	29,651	33,310
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	1,952	3,934
Other Liabilities [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	54,651	58,310
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 2,214	$ 4,819