LOANS (Narrative) (Details)	3 Months Ended			12 Months Ended
	Mar. 31, 2022 USD ($) tDR_Loan loan	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) tDR_Loan loan	Jan. 01, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred costs		$ (1,011,000)		$ (1,011,000)
Deferred loan fees and premiums include net deferred fees paid by customers		4,100,000		4,100,000
Total Deferred Fee and Premiums	$ 4,000,000	4,000,000		4,000,000
Gross loans		1,606,219,000		1,606,219,000	$ 268,000
Service rights retained, percent of outstanding balance	0.25%
Service rights retained, amount	$ 21,400,000	20,900,000		20,900,000
Number of non-accrual delinquent loans		961,000		961,000
Reserve for delinquent non accrual loans		300,000		$ 300,000
Number of TDR loans | tDR_Loan	1			1
Nonaccrual	$ 7,465,000	7,631,000		$ 7,631,000
Financing Receivable Modifications Post Modification Recorded Investment	$ 442,000	447,000		$ 447,000
Loans added to troubled debt restructuring | loan	0			0
Unpaid principal balance		8,681,000	$ 14,789,000	$ 8,681,000
Impaired financing receivable, recorded investment		8,494,000	14,613,000	8,494,000
PCI Loans, accretion interest			100,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications (to) from Nonaccretable Difference		$ 500,000	0	43,000
Deferred loan fee and premiums, net	$ (200,000)			$ (100,000)
County First Acquisition
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		2.63%		2.63%
Gross loans		$ 42,182,000		$ 42,182,000
Purchased credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired financing receivable, recorded investment		$ 1,100,000		$ 1,100,000
Purchased credit impaired | County First Acquisition
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		0.07%		0.07%
Gross loans		$ 1,116,000		$ 1,116,000
Purchased credit impaired | County First Bank Acquisition
Accounts, Notes, Loans and Financing Receivable [Line Items]
New acquisition accounting for fair market value adjustment		$ 300,000		$ 300,000
Net acquisition accounting fair market value adjustment, mark		14.95%		14.95%
All Other Loans | County First Acquisition
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		2.56%		2.56%
Gross loans		$ 41,066,000		$ 41,066,000
All Other Loans | County First Bank Acquisition
Accounts, Notes, Loans and Financing Receivable [Line Items]
New acquisition accounting for fair market value adjustment		$ 800,000		$ 800,000
Net acquisition accounting fair market value adjustment, mark		1.25%		1.25%
Loan Delinquency
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	0.10%	0.09%		0.09%
Nonaccrual	$ 1,600,000	$ 1,400,000		$ 1,400,000
Increase (decrease) In loan delinquency				$ 200,000
Nonaccrual Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	0.45%	0.48%		0.48%
Increase (decrease) in finance receivables	$ (200,000)
Number of non-accrual delinquent loans	7,500,000	$ 7,600,000		$ 7,600,000
Nonaccrual Loans With No Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of non-accrual delinquent loans		6,700,000		$ 6,700,000
Percentage of current loans on total non accrual loans				87.00%
Nonaccrual	7,200,000	7,400,000		$ 7,400,000
Interest due to debt	100,000			100,000
Nonaccrual Loans With Impairment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of non-accrual delinquent loans		1,000,000		$ 1,000,000
Percentage of delinquent loans on total non accrual loans				13.00%
Nonaccrual	300,000	300,000		$ 300,000
Interest due to debt	$ 2,000,000			1,000
Residential rentals | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt maturity period	3 years
Residential rentals | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt maturity period	20 years
U.S. SBA PPP
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred costs	$ (500,000)	(900,000)		(900,000)
Offset by net deferred premiums paid to purchase loans	41,000	100,000		100,000
Deferred loan fees and premiums included in deferred fees paid by SBA	500,000	1,000,000		1,000,000
Adjustable Rate Residential First Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,600,000,000	1,600,000,000		$ 1,600,000,000
One Troubled Debt Restructuring Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of TDR loans | loan				0
Financing Receivable Troubled Debt Restructuring
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDR loan principal curtailment	5,000			$ 19,000
Seven Trouble Debt Restructuring Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans removed from troubled debt restructuring | loan				3
Amount of loans removed from troubled debt restructuring				$ 100,000
Commercial loans | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Bank exposure, threshold limit for credit rating (or greater)	1,000,000
Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net deferred costs		(133,000)		(133,000)	0
Gross loans	$ 1,644,817,000	1,578,943,000		1,578,943,000	1,578,810,000
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	72.28%
Gross loans	$ 1,177,761,000	1,115,485,000		1,115,485,000
Number of non-accrual delinquent loans		0		$ 0
Number of TDR loans | tDR_Loan	0			0
Nonaccrual	$ 4,988,000	4,890,000		$ 4,890,000
Financing Receivable Modifications Post Modification Recorded Investment	$ 0	0		0
Unpaid principal balance		4,994,000	12,029,000	4,994,000
Impaired financing receivable, recorded investment		$ 4,890,000	11,931,000	$ 4,890,000
Commercial real estate | Commercial Construction Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	6.70%	6.50%		6.50%
Percent of appraised value or sales price	80.00%
Commercial real estate | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		70.66%		70.66%
Gross loans	$ 1,177,761,000	$ 1,115,485,000		$ 1,115,485,000	1,113,793,000
Residential first mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	5.30%
Gross loans	$ 86,416,000	91,120,000		91,120,000
Number of non-accrual delinquent loans		450,000		450,000
Nonaccrual	$ 736,000	450,000		450,000
Unpaid principal balance		879,000	794,000	879,000
Impaired financing receivable, recorded investment		$ 866,000	751,000	$ 866,000
Residential first mortgages | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt maturity period	10 years
Residential first mortgages | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt maturity period	30 years
Residential first mortgages | Adjustable Rate Residential First Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	0.90%	1.20%		1.20%
Gross loans	$ 15,100,000	$ 18,900,000		$ 18,900,000
Residential first mortgages | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		5.77%		5.77%
Gross loans	$ 86,416,000	$ 91,120,000		$ 91,120,000	92,710,000
Residential rentals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	11.73%
Gross loans	$ 191,065,000	195,035,000		195,035,000
Number of non-accrual delinquent loans		252,000		252,000
Nonaccrual	$ 672,000	942,000		942,000
Unpaid principal balance		982,000	741,000	982,000
Impaired financing receivable, recorded investment		$ 942,000	736,000	$ 942,000
Residential rentals | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt maturity period	3 years
Residential rentals | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt maturity period	20 years
Residential rentals | Apartment Buildings Rentals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of appraised value or sales price	80.00%
Residential rentals | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		12.35%		12.35%
Gross loans	$ 191,065,000	$ 195,035,000		$ 195,035,000	194,911,000
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	1.88%
Gross loans	$ 30,649,000	$ 35,590,000		$ 35,590,000
Construction and land development | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		2.25%		2.25%
Gross loans	$ 30,649,000	$ 35,590,000		$ 35,590,000	35,502,000
Home equity and second mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	1.62%
Gross loans	$ 26,445,000
Home equity and second mortgages | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		1.62%		1.62%
Gross loans	$ 26,445,000	$ 25,638,000		$ 25,638,000	25,661,000
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	3.00%
Gross loans	$ 48,948,000	50,574,000		50,574,000
Unpaid principal balance		0	0	0
Impaired financing receivable, recorded investment		$ 0	0	$ 0
Commercial loans | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		3.20%		3.20%
Gross loans	$ 48,948,000	$ 50,574,000		$ 50,574,000	50,512,000
Commercial equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio	3.97%
Gross loans	$ 64,662,000	62,499,000		62,499,000
Number of non-accrual delinquent loans		0		$ 0
Number of TDR loans | tDR_Loan	1			1
Nonaccrual	$ 666,000	691,000		$ 691,000
Financing Receivable Modifications Post Modification Recorded Investment	442,000	447,000		447,000
Unpaid principal balance		1,200,000	559,000	1,200,000
Impaired financing receivable, recorded investment		$ 1,195,000	$ 544,000	$ 1,195,000
Commercial equipment | Portfolio Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage status of loan in portfolio		3.96%		3.96%
Gross loans	$ 64,662,000	$ 62,499,000		$ 62,499,000	$ 62,706,000