LOANS - Composition of loans receivable by risk rating grade (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Pass
Residential 1-4 family	$ 337,302	$ 337,520
Residential 5+ multifamily	33,619	34,726
Construction of residential 1-4 family	11,889	12,041
Home equity lines of credit	33,381	33,728
Residential real estate	416,191	418,015
Commercial	271,708	270,461
Construction of commercial	8,225	8,482
Commercial real estate	279,933	278,943
Farm land	1,934	3,969
Vacant land	7,834	8,253
Real estate secured	705,892	709,180
Commercial and industrial	167,458	159,127
Municipal	21,914	14,344
Consumer	6,344	4,502
Loans receivable, gross	901,608	887,153
Special mention
Residential 1-4 family	4,278	4,281
Residential 5+ multifamily	99	784
Construction of residential 1-4 family
Home equity lines of credit	312	265
Residential real estate	4,689	5,330
Commercial	10,964	4,530
Construction of commercial
Commercial real estate	10,964	4,530
Farm land
Vacant land	59	69
Real estate secured	15,712	9,929
Commercial and industrial	443	2,672
Municipal
Consumer	3	10
Loans receivable, gross	16,158	12,611
Substandard
Residential 1-4 family	4,719	4,061
Residential 5+ multifamily	1,737	1,000
Construction of residential 1-4 family
Home equity lines of credit	105	440
Residential real estate	6,561	5,501
Commercial	7,052	8,608
Construction of commercial	241	494
Commercial real estate	7,293	9,102
Farm land	1,707	216
Vacant land
Real estate secured	15,561	14,819
Commercial and industrial	1,510	1,106
Municipal
Consumer	38
Loans receivable, gross	17,109	15,925
Doubtful
Residential 1-4 family
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines of credit
Residential real estate
Commercial	71
Construction of commercial
Commercial real estate	71
Farm land
Vacant land
Real estate secured	71
Commercial and industrial
Municipal
Consumer
Loans receivable, gross	71
Loss
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
Total
Residential 1-4 family	346,299	345,862
Residential 5+ multifamily	35,455	36,510
Construction of residential 1-4 family	11,889	12,041
Home equity lines of credit	33,798	34,433
Residential real estate	427,441	428,846
Commercial	289,795	283,599
Construction of commercial	8,466	8,976
Commercial real estate	298,261	292,575
Farm land	3,641	4,185
Vacant land	7,893	8,322
Real estate secured	737,236	733,928
Commercial and industrial	169,411	162,905
Municipal	21,914	14,344
Consumer	6,385	4,512
Loans receivable, gross	$ 934,946	$ 915,689

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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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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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