Composition of loans receivable by delinquency status (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	$ 414,957	$ 373,131
Residential 5+ multifamily	70,459	52,325
Construction of residential 1-4 family	21,527	19,738
Home equity lines of credit	24,895	23,270
Residential real estate	531,838	468,464
Commercial	367,257	310,923
Construction of commercial	45,762	58,838
Commercial real estate	413,019	369,761
Farm land	4,225	2,807
Vacant land	14,796	14,182
Real estate secured	963,878	855,214
Commercial and industrial	186,996	195,132
Municipal	18,607	16,534
Consumer	20,344	12,547
Loans receivable, gross	1,189,825	1,079,427
Loans Receivable Delinquency Status Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	414,910	372,620
Residential 5+ multifamily	70,459	51,464
Construction of residential 1-4 family	21,527	19,668
Home equity lines of credit	24,778	23,000
Residential real estate	531,674	466,752
Commercial	367,172	310,331
Construction of commercial	45,762	58,838
Commercial real estate	412,934	369,169
Farm land	4,225	2,807
Vacant land	14,796	14,182
Real estate secured	963,629	852,910
Commercial and industrial	186,861	194,838
Municipal	18,607	16,534
Consumer	20,223	12,503
Loans receivable, gross	1,189,320	1,076,785
Loans Receivable Delinquency Status Period Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	20	223
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit	117	165
Residential real estate	137	388
Commercial		87
Construction of commercial
Commercial real estate		87
Farm land
Vacant land
Real estate secured	137	475
Commercial and industrial	23	250
Municipal
Consumer	116	40
Loans receivable, gross	276	765
Loans Receivable Delinquency Status Period Three [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	12	135
Residential 5+ multifamily
Construction of residential 1-4 family		70
Home equity lines of credit		98
Residential real estate	12	303
Commercial	85	251
Construction of commercial
Commercial real estate	85	251
Farm land
Vacant land
Real estate secured	97	554
Commercial and industrial	12	32
Municipal
Consumer	5	4
Loans receivable, gross	114	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	100	1
Municipal
Consumer
Loans receivable, gross	100	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	47	511
Residential 5+ multifamily		861
Construction of residential 1-4 family		70
Home equity lines of credit	117	270
Residential real estate	164	1,712
Commercial	85	592
Construction of commercial
Commercial real estate	85	592
Farm land
Vacant land
Real estate secured	249	2,304
Commercial and industrial	135	294
Municipal
Consumer	121	44
Loans receivable, gross	505	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	100	11
Municipal
Consumer
Loans receivable, gross	100	11
Loans Receivable Delinquency Non Accrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	137	750
Residential 5+ multifamily		861
Construction of residential 1-4 family
Home equity lines of credit		21
Residential real estate	137	1,632
Commercial	1,199	1,924
Construction of commercial
Commercial real estate	1,199	1,924
Farm land	397	432
Vacant land
Real estate secured	1,733	3,988
Commercial and industrial	27	200
Municipal
Consumer
Loans receivable, gross	$ 1,760	$ 4,188

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