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Loans and Allowance for Credit Losses on Loans - Collateral dependent loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 37,323	$ 43,129
ACL Allocation	44,308	44,281
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	23,203	26,977
Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	9,022	9,901
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,641	3,249
Other.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,457	3,002
Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	5,048	5,387
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	10,977	11,887
Commercial | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,955	1,986
Commercial | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	9,022	9,901
Commercial | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	2,432	2,677
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,641	3,754
Leases | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,641	3,249
Leases | Other.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral		505
Leases | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	475	811
Commercial real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4,379	5,693
Commercial real estate - Investor | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	4,379	5,693
Commercial real estate - Investor | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	288
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	9,871	11,637
Commercial real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	7,414	9,147
Commercial real estate - Owner occupied | Other.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,457	2,490
Commercial real estate - Owner occupied | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	554	362
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,098	2,104
Construction | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,098	2,104
Construction | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	1,007	992
Residential real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,391	925
Residential real estate - Investor | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,391	925
Residential real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,941	4,271
Residential real estate - Owner occupied | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	3,941	4,271
Residential real estate - Owner occupied | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	260	276
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	938	1,845
Multifamily | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	938	1,845
Multifamily | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation		75
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	914	826
HELOC | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	914	826
HELOC | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	32	190
HELOC - Purchased
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	173	180
HELOC - Purchased | Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 173	180
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral		7
Other | Other.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral		7
Other | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation		$ 4

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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