INVESTMENT SECURITIES - Narrative (Details) $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) security	Mar. 31, 2021 USD ($) security	Dec. 31, 2021 USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of securities with OTTI charges \| security	1
Gain on investments	$ 25	$ 145
Number of investments securities, partially sold \| security	1
Investment securities	$ 529,730		$ 472,438
Proceeds from sale of investment securities	3,075	$ 75,736
Number of investment securities sold \| security		14
Debt Securities
Debt Securities, Available-for-sale [Line Items]
Investment securities	3,100	$ 75,600
Proceeds from sale of investment securities	3,100	$ 75,736
Non-agency CMOs
Debt Securities, Available-for-sale [Line Items]
Investment security, OTTI	14,700
Cumulative OTTI recognized in earnings	171
Investment securities	27,003		29,698
Collateral Pledged
Debt Securities, Available-for-sale [Line Items]
Investment securities pledged to secure public funds, fair value	$ 291,000		$ 295,600

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Number of Investments Securities, Partially Sold

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Number of Securities, Other Than Temporary Impairment

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of restricted investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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