Composition of loans receivable by delinquency status (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Loans Receivable Delinquency Status Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	$ 379,534	$ 372,620
Residential 5+ multifamily	53,376	51,464
Construction of residential 1-4 family	20,818	19,668
Home equity lines of credit	23,210	23,000
Residential real estate	476,938	466,752
Commercial	310,356	310,331
Construction of commercial	65,273	58,838
Commercial real estate	375,629	369,169
Farm land	2,778	2,807
Vacant land	14,710	14,182
Real estate secured	870,055	852,910
Commercial and industrial	177,050	194,838
Municipal	14,263	16,534
Consumer	14,312	12,503
Loans receivable, gross	1,075,680	1,076,785
Loans Receivable Delinquency Status Period Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	1,599	223
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit	66	165
Residential real estate	1,665	388
Commercial		87
Construction of commercial
Commercial real estate		87
Farm land
Vacant land
Real estate secured	1,665	475
Commercial and industrial		250
Municipal
Consumer	22	40
Loans receivable, gross	1,687	765
Loans Receivable Delinquency Status Period Three [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	59	135
Residential 5+ multifamily
Construction of residential 1-4 family		70
Home equity lines of credit		98
Residential real estate	59	303
Commercial	205	251
Construction of commercial
Commercial real estate	205	251
Farm land
Vacant land
Real estate secured	264	554
Commercial and industrial	437	32
Municipal
Consumer	20	4
Loans receivable, gross	721	590
Loans Receivable Delinquency Status Period Four [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family		63
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate		63
Commercial
Construction of commercial
Commercial real estate
Farm land
Vacant land
Real estate secured		63
Commercial and industrial		1
Municipal
Consumer	2
Loans receivable, gross	2	64
Loans Receivable Delinquency Status Period Five [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	15	90
Residential 5+ multifamily		861
Construction of residential 1-4 family
Home equity lines of credit		7
Residential real estate	15	958
Commercial	254	254
Construction of commercial
Commercial real estate	254	254
Farm land
Vacant land
Real estate secured	269	1,212
Commercial and industrial	11	11
Municipal
Consumer
Loans receivable, gross	280	1,223
Loans Receivable Delinquency Status Period Six [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	1,673	511
Residential 5+ multifamily		861
Construction of residential 1-4 family		70
Home equity lines of credit	66	270
Residential real estate	1,739	1,712
Commercial	459	592
Construction of commercial
Commercial real estate	459	592
Farm land
Vacant land
Real estate secured	2,198	2,304
Commercial and industrial	448	294
Municipal
Consumer	44	44
Loans receivable, gross	2,690	2,642
Loans Receivable Delinquency Accrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate
Commercial
Construction of commercial
Commercial real estate
Farm land
Vacant land
Real estate secured
Commercial and industrial	11	11
Municipal
Consumer	2
Loans receivable, gross	13	11
Loans Receivable Delinquency Non Accrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	417	750
Residential 5+ multifamily		861
Construction of residential 1-4 family
Home equity lines of credit		21
Residential real estate	417	1,632
Commercial	1,887	1,924
Construction of commercial
Commercial real estate	1,887	1,924
Farm land	420	432
Vacant land
Real estate secured	2,724	3,988
Commercial and industrial	28	200
Municipal
Consumer
Loans receivable, gross	$ 2,752	$ 4,188

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The fair value as of the balance sheet date of firm holdings in fixed income obligations issued by state and local governments and authorities. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings.

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Amount of investment in certain other real estate investments not specifically identified elsewhere in the existing taxonomy.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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