Weighted average maturity (weighted by amount of the agreement) of FHLB advances.

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Minimum amount of qualifying collateral of the fair value of outstanding advances.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount, before allowance for credit loss, of financing receivable.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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BORROWINGS AND RELATED INTEREST (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Sep. 30, 2003
Debt Instrument [Line Items]
Loans, gross	$ 6,547,971		$ 6,402,586
Trust redeemable preferred securities issued				$ 35,000
Gain from early debt extinguishment	42	$ 0
Subordinated capital notes	$ 0		36,083
Advances from the Federal Home Loan Bank
Debt Instrument [Line Items]
Minimum amount of qualifying collateral	110.00%
Additional borrowing capacity	$ 664,300		$ 697,300
Weighted average period remaining maturity of FHLB advances	1 day		3 days
Original debt instrument term of FHLB advances	1 month
Accrued interest payable	$ 13		$ 8
Advances from the Federal Home Loan Bank \| Asset Pledged as Collateral
Debt Instrument [Line Items]
Loans, gross	910,700		$ 949,000
Junior Subordinated Debt
Debt Instrument [Line Items]
Par value of subordinated deferrable interest debenture	36,100
Write off of unamortized issuance costs	$ 405
Effective interest rate	3.23%
Gain from early debt extinguishment	$ 42
Junior Subordinated Debt \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.95%