LOANS AND ALLOWANCE FOR CREDIT LOSSES (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) loan	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)		Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Recorded Investment, Loans Not Past Due	$ 2,628,797,000		$ 2,628,797,000		$ 2,339,986,000	[1]
Loans held for investment	2,628,797,000		$ 2,628,797,000		2,339,986,000	[1]
TDRs during period | loan			11
TDR, subsequent default, number of contracts			0
TDR amount	2,700,000		$ 2,700,000
Additional income from interest if recognized	100,000	$ 50,000.00	300,000	$ 90,000.00
Financing receivable, allowance for credit loss	30,209,000	31,265,000	30,209,000	31,265,000	29,105,000	[1]	$ 29,379,000	$ 34,893,000	$ 36,345,000
Loans Receivable [Member]
Accounts Notes And Loans Receivable [Line Items]
Accrued interest receivable	9,000,000.0		9,000,000.0		10,800,000
Doubtful [Member]
Accounts Notes And Loans Receivable [Line Items]
Recorded Investment, Loans Not Past Due	0		0		0
Loans held for investment	0		0		0
Residential Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Mortgage loans on real estate, foreclosures			800,000		900,000
Consumer Portfolio Segment [Member]
Accounts Notes And Loans Receivable [Line Items]
Recorded Investment, Loans Not Past Due	179,691,000		179,691,000		60,996,000
Loans held for investment	179,691,000		179,691,000		60,996,000
Mortgage loans in process of foreclosure, amount	0		0		0
Financing receivable, allowance for credit loss	1,569,000	$ 428,000	1,569,000	$ 428,000	787,000		$ 1,025,000	$ 369,000	$ 517,000
Paycheck Protection Program Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Financing receivable, allowance for credit loss	0		0
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 1,500,000		$ 1,500,000		$ 300,000

[1] Derived from audited consolidated financial statements