LOANS - Composition of loans receivable and allowance for loan losses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Totals	$ 949,142	$ 927,413
Collectively evaluated Loans
Residential 1-4 family	348,369	340,847
Residential 5+ multifamily	34,031	34,478
Construction of residential 1-4 family	12,214	11,889
Home equity lines credit	31,700	33,693
Residential real estate	426,314	420,907
Commercial	306,125	285,462
Construction of commercial	10,922	8,466
Commercial real estate	317,047	293,928
Farm land	3,431	3,455
Vacant land	14,311	7,713
Real estate secured	761,103	726,003
Commercial and industrial	157,354	169,285
Municipal	20,964	21,914
Consumer	8,161	6,349
Unallocated allowance
Totals	947,582	923,551
Collectively evaluated Allowance
Residential 1-4 family	2,400	2,117
Residential 5+ multifamily	508	446
Construction of residential 1-4 family	87	75
Home equity lines credit	252	197
Residential real estate	3,247	2,835
Commercial	3,986	3,333
Construction of commercial	126	104
Commercial real estate	4,112	3,437
Farm land	52	47
Vacant land	136	66
Real estate secured	7,547	6,385
Commercial and industrial	1,063	1,143
Municipal	53	46
Consumer	75	59
Unallocated allowance	972	569
Totals	9,710	8,202
Individually evaluated Loans
Residential 1-4 family	4,743	5,452
Residential 5+ multifamily	977	977
Construction of residential 1-4 family
Home equity lines credit	207	105
Residential real estate	5,927	6,534
Commercial	4,311	4,333
Construction of commercial
Commercial real estate	4,311	4,333
Farm land	181	186
Vacant land	177	180
Real estate secured	10,596	11,233
Commercial and industrial	219	126
Municipal
Consumer	34	36
Unallocated allowance
Totals	10,849	11,395
Individually evaluated Allowance
Residential 1-4 family	306	276
Residential 5+ multifamily
Construction of residential 1-4 family
Home equity lines credit	26
Residential real estate	332	276
Commercial	533	409
Construction of commercial
Commercial real estate	533	409
Farm land
Vacant land	8	5
Real estate secured	873	690
Commercial and industrial	8	2
Municipal
Consumer	27	1
Unallocated allowance
Totals	908	693
Total portfolio Loans
Residential 1-4 family	353,112	346,299
Residential 5+ multifamily	35,008	35,455
Construction of residential 1-4 family	12,214	11,889
Home equity lines credit	31,907	33,798
Residential real estate	432,241	427,441
Commercial	310,436	289,795
Construction of commercial	10,922	8,466
Commercial real estate	321,358	298,261
Farm land	3,612	3,641
Vacant land	14,488	7,893
Real estate secured	771,699	737,236
Commercial and industrial	157,573	169,411
Municipal	20,964	21,914
Consumer	8,195	6,385
Unallocated allowance
Totals	958,431	934,946
Total portfolio Allowance
Residential 1-4 family	2,706	2,393
Residential 5+ multifamily	508	446
Construction of residential 1-4 family	87	75
Home equity lines credit	278	197
Residential real estate	3,579	3,111
Commercial	4,519	3,742
Construction of commercial	126	104
Commercial real estate	4,645	3,846
Farm land	52	47
Vacant land	144	71
Real estate secured	8,420	7,075
Commercial and industrial	1,071	1,145
Municipal	53	46
Consumer	102	60
Unallocated allowance	972	569
Totals	$ 10,618	$ 8,895

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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 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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Amount after allowance and 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 and loans held for sale.

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