INVESTMENT SECURITIES - Held to maturity securities (Details) $ in Thousands	Mar. 31, 2022 USD ($)
Amortized Carrying Value	$ 227,441
Fair Value	220,188
Available-for-sale Securities
Amortized cost	226,458
Fair Value Adjustment	983
Amortized Carrying Value	227,441
Gross Unrealized Losses	7,253
Fair Value	220,188
Agency mortgage-backed securities. \| Available-for-sale Securities
Amortized cost	88,542
Fair Value Adjustment	4,424
Amortized Carrying Value	92,966
Gross Unrealized Losses	2,966
Fair Value	90,000
Agency collateralized mortgage obligations \| Available-for-sale Securities
Amortized cost	131,638
Fair Value Adjustment	(3,420)
Amortized Carrying Value	128,218
Gross Unrealized Losses	4,023
Fair Value	124,195
States and political subdivisions securities \| Available-for-sale Securities
Amortized cost	6,278
Fair Value Adjustment	(21)
Amortized Carrying Value	6,257
Gross Unrealized Losses	264
Fair Value	$ 5,993

Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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