Composition of loans receivable by risk rating grade (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Residential 1-4 family	$ 376,063	$ 367,225
Residential 5+ multifamily	53,214	50,588
Construction of residential 1-4 family	20,818	19,738
Home equity lines of credit	23,055	23,037
Residential real estate	473,150	460,588
Commercial	274,294	271,821
Construction of commercial	65,273	58,838
Commercial real estate	339,567	330,659
Farm land	1,152	1,162
Vacant land	14,673	14,143
Real estate secured	828,542	806,552
Commercial and industrial	174,968	191,857
Municipal	14,263	16,534
Consumer	14,354	12,547
Loans receivable, gross	1,032,127	1,027,490
Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Residential 1-4 family	3,132	3,543
Residential 5+ multifamily	77	79
Construction of residential 1-4 family
Home equity lines of credit	221	212
Residential real estate	3,430	3,834
Commercial	15,949	16,034
Construction of commercial
Commercial real estate	15,949	16,034
Farm land	1,206	1,214
Vacant land	37	39
Real estate secured	20,622	21,121
Commercial and industrial	584	688
Municipal
Consumer
Loans receivable, gross	21,206	21,809
Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Residential 1-4 family	2,012	2,363
Residential 5+ multifamily	85	1,658
Construction of residential 1-4 family
Home equity lines of credit		21
Residential real estate	2,097	4,042
Commercial	20,572	23,068
Construction of commercial
Commercial real estate	20,572	23,068
Farm land	420	431
Vacant land
Real estate secured	23,089	27,541
Commercial and industrial	1,946	2,587
Municipal
Consumer	2
Loans receivable, gross	25,037	30,128
Doubtful [Member]
Financing Receivable, Credit Quality Indicator [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
Municipal
Consumer
Loans receivable, gross
Unlikely to be Collected Financing Receivable [Member]
Financing Receivable, Credit Quality Indicator [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
Municipal
Consumer
Loans receivable, gross
Nonperforming Financial Instruments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Residential 1-4 family	381,207	373,131
Residential 5+ multifamily	53,376	52,325
Construction of residential 1-4 family	20,818	19,738
Home equity lines of credit	23,276	23,270
Residential real estate	478,677	468,464
Commercial	310,815	310,923
Construction of commercial	65,273	58,838
Commercial real estate	376,088	369,761
Farm land	2,778	2,807
Vacant land	14,710	14,182
Real estate secured	872,253	855,214
Commercial and industrial	177,498	195,132
Municipal	14,263	16,534
Consumer	14,356	12,547
Loans receivable, gross	$ 1,078,370	$ 1,079,427

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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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The net carrying amount as of the balance sheet date of the sum of the various components of an operative builder's inventory, including finished homes. Operative builders primarily consist of entities that develop land, construct residential homes and commercial and industrial buildings thereon, and sell them to home buyers and operators of the commercial and industrial properties.

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Total of (1) improvements, (2) held-for-sale, (3) land and land under development, (4) construction-in-process, (5) mortgage loans held-in-inventory, and (6) other real estate investments which are considered inventory due to being held for sale or disposition.

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Cost of real estate projects incurred for projects for eventual sale or transfer (condominium or time share projects, vacation clubs).

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Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities..

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Represents mortgage loans held in inventory primarily for sale to others (third parties, businesses, legal entities) in the ordinary course of business.

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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