Composition of loans receivable by delinquency status (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Loans Receivable Delinquency Status Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	$ 427,769	$ 372,620
Residential 5+ multifamily	80,400	51,464
Construction of residential 1-4 family	22,534	19,668
Home equity lines of credit	25,411	23,000
Residential real estate	556,114	466,752
Commercial	374,196	310,331
Construction of commercial	46,866	58,838
Commercial real estate	421,062	369,169
Farm land	4,081	2,807
Vacant land	14,440	14,182
Real estate secured	995,697	852,910
Commercial and industrial	190,340	194,838
Municipal	19,693	16,534
Consumer	20,303	12,503
Loans receivable, gross	1,226,033	1,076,785
Loans Receivable Delinquency Status Period Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	672	223
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit	288	165
Residential real estate	960	388
Commercial		87
Construction of commercial
Commercial real estate		87
Farm land
Vacant land
Real estate secured	960	475
Commercial and industrial	149	250
Municipal
Consumer	154	40
Loans receivable, gross	1,263	765
Loans Receivable Delinquency Status Period Three [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	30	135
Residential 5+ multifamily
Construction of residential 1-4 family		70
Home equity lines of credit		98
Residential real estate	30	303
Commercial		251
Construction of commercial
Commercial real estate		251
Farm land
Vacant land
Real estate secured	30	554
Commercial and industrial	1	32
Municipal
Consumer	84	4
Loans receivable, gross	115	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	85
Construction of commercial
Commercial real estate	85
Farm land
Vacant land
Real estate secured	85	63
Commercial and industrial		1
Municipal
Consumer	5
Loans receivable, gross	90	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
Construction of commercial
Commercial real estate		254
Farm land
Vacant land
Real estate secured	15	1,212
Commercial and industrial		11
Municipal
Consumer
Loans receivable, gross	15	1,223
Loans Receivable Delinquency Status Period Six [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	717	511
Residential 5+ multifamily		861
Construction of residential 1-4 family		70
Home equity lines of credit	288	270
Residential real estate	1,005	1,712
Commercial	85	592
Construction of commercial
Commercial real estate	85	592
Farm land
Vacant land
Real estate secured	1,090	2,304
Commercial and industrial	150	294
Municipal
Consumer	243	44
Loans receivable, gross	1,483	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
Municipal
Consumer
Loans receivable, gross		11
Loans Receivable Delinquency Non Accrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	820	750
Residential 5+ multifamily		861
Construction of residential 1-4 family
Home equity lines of credit		21
Residential real estate	820	1,632
Commercial	1,255	1,924
Construction of commercial
Commercial real estate	1,255	1,924
Farm land	393	432
Vacant land
Real estate secured	2,468	3,988
Commercial and industrial	189	200
Municipal
Consumer	5
Loans receivable, gross	$ 2,662	$ 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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