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LOANS - Additional information (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) loan | Sep. 30, 2021 USD ($) | Jun. 30, 2021 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) loan | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) loan | Dec. 31, 2020 USD ($) loan | Dec. 31, 2019 USD ($)
LOANS |  |  |  |  |  |  |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Total | $ 4,247,000 |  |  |  | $ 6,286,000 |  |  |  | $ 4,247,000 | $ 6,286,000 |
Recorded investment - with allowance | 6,540,000 |  |  |  | 8,082,000 |  |  |  | 6,540,000 | 8,082,000 |
Specific allowances | 740,000 |  |  |  | 925,000 |  |  |  | 740,000 | 925,000 |
Loans receivable | 1,564,849,000 |  |  |  | 1,644,209,000 |  |  |  | 1,564,849,000 | 1,644,209,000 |
Allowance for Loan losses | 13,537,000 |  |  |  | 11,385,000 |  |  |  | 13,537,000 | 11,385,000 | $ 9,836,000
Interest and fees |  |  |  |  |  |  |  |  | 74,549,000 | 67,384,000 |
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 1,575,000 | 2,465,000 |
Provision (credit) for loan losses | 1,128,000 | $ 1,530,000 | $ 744,000 | $ 259,000 | 620,000 | $ 1,941,000 | $ (176,000) | $ 1,528,000 | 3,661,000 | 3,913,000 |
Increase (decrease) in provision for loan losses |  |  |  |  |  |  |  |  | (252,000) |  |
Amount of net charge related to specific loans |  |  |  |  |  |  |  |  | 1,324,000 |  |
Amount of net increase (decrease) in specific allowances on loans |  |  |  |  |  |  |  |  | (185,000) |  |
Amount of net charge offs related to a specific loan |  |  |  |  |  |  |  |  | 1,509,000 |  |
Amount of increase (decrease) in the provision for loan losses from collectively determined portion of allowance |  |  |  |  |  |  |  |  | 2,251,000 |  |
Amount of increase (decrease) in the provision for loan losses from unallocated portion of allowance |  |  |  |  |  |  |  |  | 86,000 |  |
Recorded Investment | 15,734,000 |  |  |  | 17,818,000 |  |  |  | 15,734,000 | 17,818,000 |
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 6,558,000 |  |  |  | 6,841,000 |  |  |  | 6,558,000 | 6,841,000 |
Loans Modified, Recorded Investment | $ 6,558,000 |  |  |  | $ 6,841,000 |  |  |  | $ 6,558,000 | $ 6,841,000 |
COVID-19-related loan modifications |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans Modified, Number of Loans | loan | 0 |  |  |  | 45 |  |  |  | 0 | 45 |
Loans Modified, Recorded Investment |  |  |  |  | $ 37,397,000 |  |  |  |  | $ 37,397,000 |
Small Business Administration - Paycheck Protection Program |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Accretion of fees received |  |  |  |  |  |  |  |  | $ 5,515,000 | 1,901,000 |
Interest and fees |  |  |  |  |  |  |  |  | 6,530,000 | 2,924,000 |
Paycheck Protection Program - 1st Draw |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Total | $ 54,000 |  |  |  |  |  |  |  | 54,000 |  |
Contractual principal balances | 1,410,000 |  |  |  |  |  |  |  | 1,410,000 |  |
Recorded Investment | 1,356,000 |  |  |  |  |  |  |  | 1,356,000 |  |
Paycheck Protection Program - 2nd Draw |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Total | 848,000 |  |  |  |  |  |  |  | 848,000 |  |
Contractual principal balances | 26,356,000 |  |  |  |  |  |  |  | 26,356,000 |  |
Recorded Investment | 25,508,000 |  |  |  |  |  |  |  | 25,508,000 |  |
Unfunded Loan Commitment |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan losses | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Commercial |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 978,371,000 |  |  |  | 1,007,751,000 |  |  |  | 978,371,000 | 1,007,751,000 |
Allowance for Loan losses | 8,293,000 |  |  |  | 6,308,000 |  |  |  | 8,293,000 | 6,308,000 | 4,788,000
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 1,464,000 | 2,343,000 |
Provision (credit) for loan losses |  |  |  |  |  |  |  |  | 3,427,000 | 3,847,000 |
Recorded Investment | 1,391,000 |  |  |  |  |  |  |  | 1,391,000 |  |
Commercial | Maximum |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Threshold amount of loan balance for evaluating individual impairment loss | 200,000 |  |  |  |  |  |  |  | 200,000 |  |
Commercial | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 6,485,000 |  |  |  | 6,696,000 |  |  |  | 6,485,000 | 6,696,000 |
Commercial | Loan Customer Major Write Off [Member] |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 1,463,000 | $ 2,219,000 |
Number of loan charged off | loan |  |  |  |  |  |  |  |  |  | 1 |
Recorded Investment | 0 |  |  |  | 0 |  |  |  | 0 | $ 0 |
Commercial | Paycheck Protection Program - 1st Draw |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 1,356,000 |  |  |  | 132,269,000 |  |  |  | 1,356,000 | 132,269,000 |
Allowance for Loan losses | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Commercial | Paycheck Protection Program - 1st Draw | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Commercial | Paycheck Protection Program - 2nd Draw |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 25,508,000 |  |  |  | 0 |  |  |  | 25,508,000 | 0 |
Allowance for Loan losses | 0 |  |  |  |  |  |  |  | 0 |  |
Commercial | Paycheck Protection Program - 2nd Draw | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 0 |  |  |  |  |  |  |  | 0 |  |
Commercial | Commercial and industrial |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Recorded investment - with allowance | 72,000 |  |  |  | 72,000 |  |  |  | 72,000 | 72,000 |
Specific allowances | 72,000 |  |  |  | 72,000 |  |  |  | 72,000 | 72,000 |
Loans receivable | 159,073,000 |  |  |  | 159,577,000 |  |  |  | 159,073,000 | 159,577,000 |
Allowance for Loan losses | 2,723,000 |  |  |  | 2,245,000 |  |  |  | 2,723,000 | 2,245,000 | 1,391,000
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 1,464,000 | 2,236,000 |
Provision (credit) for loan losses |  |  |  |  |  |  |  |  | 1,922,000 | 3,074,000 |
Commercial | Commercial and industrial | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 763,000 |  |  |  | 784,000 |  |  |  | 763,000 | 784,000 |
Commercial | Real estate loan |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Recorded investment - with allowance | 6,468,000 |  |  |  | 6,501,000 |  |  |  | 6,468,000 | 6,501,000 |
Specific allowances | 668,000 |  |  |  | 691,000 |  |  |  | 668,000 | 691,000 |
Loans receivable | 569,840,000 |  |  |  | 531,810,000 |  |  |  | 569,840,000 | 531,810,000 |
Allowance for Loan losses | 4,405,000 |  |  |  | 3,051,000 |  |  |  | 4,405,000 | 3,051,000 | 1,921,000
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 0 | 0 |
Provision (credit) for loan losses |  |  |  |  |  |  |  |  | 1,352,000 | 1,130,000 |
Commercial | Real estate loan | TDRs for which payment defaults occurred |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Specific allowances | 427,000 |  |  |  | 416,000 |  |  |  | 427,000 | 416,000 |
Commercial | Real estate loan | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable |  |  |  |  | 4,298,000 |  |  |  |  | 4,298,000 |
Unallocated |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan losses | 671,000 |  |  |  | 585,000 |  |  |  | 671,000 | 585,000 | 585,000
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 0 | 0 |
Provision (credit) for loan losses |  |  |  |  |  |  |  |  | 86,000 | 0 |
Residential mortgage |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 569,346,000 |  |  |  | 620,172,000 |  |  |  | 569,346,000 | 620,172,000 |
Allowance for Loan losses | 4,338,000 |  |  |  | 4,253,000 |  |  |  | 4,338,000 | 4,253,000 | $ 4,182,000
Financing receivable charge-offs |  |  |  |  |  |  |  |  | 11,000 | 0 |
Provision (credit) for loan losses |  |  |  |  |  |  |  |  | 90,000 | 27,000 |
Residential mortgage | Maximum |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Threshold amount of loan balance for evaluating individual impairment loss | 400,000 |  |  |  |  |  |  |  | 400,000 |  |
Residential mortgage | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 73,000 |  |  |  | $ 145,000 |  |  |  | 73,000 | $ 145,000 |
Residential mortgage | Real estate loan |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | 569,840,000 |  |  |  |  |  |  |  | 569,840,000 |  |
Residential mortgage | Real estate loan | Purchased Credit Impaired |  |  |  |  |  |  |  |  |  |  |
LOANS |  |  |  |  |  |  |  |  |  |  |
Loans receivable | $ 4,144,000 |  |  |  |  |  |  |  | $ 4,144,000 |  |

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- Definition The net increase(decrease) in interest income during the period representing the allocation of deferred loan origination fees less deferred loan origination costs using the effective interest method over the term of the debt arrangement to which they pertain taking into account the effect of prepayments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124402152&loc=d3e8622-111531 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533 + Details
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