Composition of loans receivable by delinquency status (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loans Receivable Delinquency Status Current [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	$ 372,620	$ 349,382
Residential 5+ multifamily	51,464	36,197
Construction of residential 1-4 family	19,668	8,814
Home equity lines of credit	23,000	27,522
Residential real estate	466,752	421,915
Commercial	310,331	307,927
Construction of commercial	58,838	31,722
Commercial real estate	369,169	339,649
Farm land	2,807	2,594
Vacant land	14,182	14,079
Real estate secured	852,910	778,237
Commercial and industrial	194,838	224,496
Municipal	16,534	21,512
Consumer	12,503	7,677
Loans receivable, gross	1,076,785	1,031,922
Loans Receivable Delinquency Status Period Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	223	1,419
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit	165	157
Residential real estate	388	1,576
Commercial	87	1,855
Construction of commercial
Commercial real estate	87	1,855
Farm land		154
Vacant land
Real estate secured	475	3,585
Commercial and industrial	250	2,148
Municipal
Consumer	40	10
Loans receivable, gross	765	5,743
Loans Receivable Delinquency Status Period Three [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	135	308
Residential 5+ multifamily
Construction of residential 1-4 family	70
Home equity lines of credit	98	9
Residential real estate	303	317
Commercial	251	530
Construction of commercial
Commercial real estate	251	530
Farm land		450
Vacant land
Real estate secured	554	1,297
Commercial and industrial	32	457
Municipal
Consumer	4
Loans receivable, gross	590	1,754
Loans Receivable Delinquency Status Period Four [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	63	673
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate	63	673
Commercial		95
Construction of commercial
Commercial real estate		95
Farm land
Vacant land
Real estate secured	63	768
Commercial and industrial	1	1
Municipal
Consumer
Loans receivable, gross	64	769
Loans Receivable Delinquency Status Period Five [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	90	219
Residential 5+ multifamily	861	861
Construction of residential 1-4 family
Home equity lines of credit	7	116
Residential real estate	958	1,196
Commercial	254	434
Construction of commercial
Commercial real estate	254	434
Farm land
Vacant land
Real estate secured	1,212	1,630
Commercial and industrial	11	46
Municipal
Consumer
Loans receivable, gross	1,223	1,676
Loans Receivable Delinquency Status Period Six [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	511	2,619
Residential 5+ multifamily	861	861
Construction of residential 1-4 family	70
Home equity lines of credit	270	282
Residential real estate	1,712	3,762
Commercial	592	2,914
Construction of commercial
Commercial real estate	592	2,914
Farm land		604
Vacant land
Real estate secured	2,304	7,280
Commercial and industrial	294	2,652
Municipal
Consumer	44	10
Loans receivable, gross	2,642	9,942
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	12
Municipal
Consumer
Loans receivable, gross	11	12
Loans Receivable Delinquency Non Accrual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Residential 1-4 family	750	1,508
Residential 5+ multifamily	861	861
Construction of residential 1-4 family
Home equity lines of credit	21	154
Residential real estate	1,632	2,523
Commercial	1,924	2,544
Construction of commercial
Commercial real estate	1,924	2,544
Farm land	432	158
Vacant land		37
Real estate secured	3,988	5,262
Commercial and industrial	200	374
Municipal
Consumer
Loans receivable, gross	$ 4,188	$ 5,636

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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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