SECURITIES - Additional Information (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2017 security	Dec. 31, 2022 USD ($) security segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral		$ 946,300,000	$ 814,700,000
Gain on sale of investments		6,000	274,000	$ 290,000
Loss on sale of investments		$ 3,000	160,000	57,000
Number of CDO other-than-temporary impaired | security		3
Number of CDO called | security	1
Cumulative OTTI charges		$ 2,974,000	2,974,000	2,974,000	$ 2,974,000
Number of investment securities segregation for impairment evaluation | segment		2
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale		$ 179,597,000	$ 262,209,000	$ 260,631,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		895
Other Than Temporarily Impaired Cdo
Debt Securities, Available-for-sale [Line Items]
Contractual balance		$ 3,700,000
Reduced balance		3,000,000.0
Interest payment received		750,000
Cumulative OTTI charges		3,000,000.0
Other comprehensive income net		$ 3,000,000.0