LOANS - Additional information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
LOANS
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Total	$ 4,221,000		$ 4,221,000			$ 4,247,000
Impaired Financing Receivable, with Related Allowance, Recorded Investment1	3,396,000		3,396,000			6,540,000
Specific allowances	427,000		427,000			740,000
Loans receivable	1,690,246,000		1,690,246,000			1,564,849,000
Allowance for Loan losses	16,170,000	$ 12,700,000	16,170,000	$ 12,700,000	$ 14,547,000	13,537,000	$ 12,375,000	$ 11,385,000
Interest and fees	20,085,000	18,529,000	56,561,000	56,095,000
Financing receivable charge-offs	2,196,000	1,220,000	2,417,000	1,278,000
Provision (credit) for loan losses	3,794,000	1,530,000	4,993,000	2,533,000
Proceeds from sales of the real estate			4,760,000
Increase (decrease) in provision for loan losses	2,264,000		2,460,000
Amount of net charge related to specific loans	2,171,000	611,000	2,047,000	1,176,000
Amount of net increase (decrease) in specific allowances on loans		(594,000)	313,000	42,000
Amount of net charge offs related to a specific loan		1,205,000	2,360,000	1,218,000
Amount of increase (decrease) in the provision for loan losses from collectively determined portion of allowance	1,623,000	919,000	2,617,000	1,271,000
Amount of increase (decrease) in the provision for loan losses from unallocated portion of allowance			329,000	86,000
Recorded Investment	13,309,000		13,309,000			15,734,000
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend	0		0			0
Income From Repayments Of PCI Loans In Excess Of Carrying Amounts	173,000	17,000	1,585,000	35,000
Purchased Credit Impaired
LOANS
Loans receivable	3,783,000		3,783,000			6,558,000
Loans Modified, Recorded Investment	3,783,000		3,783,000			6,558,000
Small Business Administration - Paycheck Protection Program
LOANS
Interest and fees	118,000	1,639,000	899,000	4,886,000
Paycheck Protection Program [Member]
LOANS
Loans receivable	727,000		727,000
Specific loans allowance			0
Paycheck Protection Program - 1st Draw
LOANS
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Total	2,000		2,000
Contractual principal balances	26,000		26,000
Recorded Investment	24,000		24,000
Paycheck Protection Program - 2nd Draw
LOANS
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums, Total	82,000		82,000
Contractual principal balances	2,093,000		2,093,000
Recorded Investment	2,011,000		2,011,000
Unfunded Loan Commitment
LOANS
Allowance for Loan losses	0		0			0
Commercial
LOANS
Loans receivable	1,082,355,000		1,082,355,000			978,371,000
Allowance for Loan losses	10,238,000	7,433,000	10,238,000	7,433,000	8,894,000	8,293,000	7,118,000	6,308,000
Financing receivable charge-offs	2,160,000	1,194,000	2,310,000	1,194,000
Provision (credit) for loan losses	3,504,000	1,503,000	4,255,000	2,297,000
Recorded Investment	196,000		196,000
Commercial | Purchased Credit Impaired
LOANS
Loans receivable	3,783,000		3,783,000			6,485,000
Commercial | Paycheck Protection Program - 1st Draw
LOANS
Loans receivable	24,000		24,000			1,356,000
Allowance for Loan losses	0		0			0
Commercial | Paycheck Protection Program - 1st Draw | Purchased Credit Impaired
LOANS
Loans receivable	0		0			0
Commercial | Paycheck Protection Program - 2nd Draw
LOANS
Loans receivable	2,011,000		2,011,000			25,508,000
Allowance for Loan losses	0		0			0
Commercial | Paycheck Protection Program - 2nd Draw | Purchased Credit Impaired
LOANS
Loans receivable	0		0			0
Commercial | Commercial and industrial
LOANS
Impaired Financing Receivable, with Related Allowance, Recorded Investment1	0		0			72,000
Specific allowances	0		0			72,000
Loans receivable	172,258,000		172,258,000			159,073,000
Allowance for Loan losses	2,823,000	2,540,000	2,823,000	2,540,000	2,792,000	2,723,000	2,781,000	2,245,000
Financing receivable charge-offs	0	1,194,000	150,000	1,194,000
Provision (credit) for loan losses	31,000	947,000	250,000	1,469,000
Commercial | Commercial and industrial | Purchased Credit Impaired
LOANS
Loans receivable	39,000		39,000			763,000
Commercial | Real estate loan
LOANS
Impaired Financing Receivable, with Related Allowance, Recorded Investment1	3,396,000		3,396,000			6,468,000
Specific allowances	427,000		427,000			668,000
Loans receivable	658,861,000		658,861,000			569,840,000
Allowance for Loan losses	6,047,000	3,820,000	6,047,000	3,820,000	4,982,000	4,405,000	3,452,000	3,051,000
Financing receivable charge-offs	2,160,000	0	2,160,000	0
Provision (credit) for loan losses	3,225,000	368,000	3,802,000	767,000
Commercial | Real estate loan | Purchased Credit Impaired
LOANS
Loans receivable	3,744,000		3,744,000			4,144,000
Commercial | Real estate loan | Loan Customer Major Write Off [Member]
LOANS
Loans receivable	6,920,000		6,920,000
Commercial loan with specific allowance
LOANS
Loans receivable		3,496,000		3,496,000
Unallocated
LOANS
Allowance for Loan losses	1,000,000	671,000	1,000,000	671,000	1,000,000	671,000	671,000	585,000
Financing receivable charge-offs	0	0	0	0
Provision (credit) for loan losses	0	0	329,000	86,000
Residential mortgage
LOANS
Loans receivable	589,984,000		589,984,000			569,346,000
Allowance for Loan losses	4,697,000	4,359,000	4,697,000	4,359,000	$ 4,392,000	4,338,000	$ 4,355,000	$ 4,253,000
Financing receivable charge-offs	0	0	0	11,000
Provision (credit) for loan losses	304,000	$ 3,000	341,000	$ 112,000
Residential mortgage | Purchased Credit Impaired
LOANS
Loans receivable	$ 0		$ 0			$ 73,000