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SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) security	Sep. 30, 2021 USD ($)
Investment Holdings [Line Items]
Purchases of securities available for sale | $	$ 41,400,000	$ 160,000,000	$ 428,068,000	$ 428,950,000
Proceeds from sale of available-for-sale securities | $	0	0	149,994,000	0
Debt securities, available-for-sale, realized gain | $	0	0	6,000	0
Debt securities, available-for-sale, realized loss | $	$ 0	$ 0	$ 0	$ 0
Municipal bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	76		76
Number of securities	95		95
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			10.10%
Held-to-maturity, securities in unrealized loss positions	148		148
Held-to-maturity securities portfolio, number of securities	192		192
Aggregate losses, percent			16.10%
Agency collateralized mortgage obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	245		245
Number of securities	248		248
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			15.00%
Held-to-maturity, securities in unrealized loss positions	13		13
Held-to-maturity securities portfolio, number of securities	13		13
Aggregate losses, percent			15.00%
Agency commercial mortgage-backed securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	136		136
Number of securities	139		139
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			15.20%
Held-to-maturity, securities in unrealized loss positions	17		17
Held-to-maturity securities portfolio, number of securities	17		17
Aggregate losses, percent			17.40%
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	14		14
Number of securities	15		15
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			5.50%
Other bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	2		2
Number of securities	3		3
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			18.30%
Tax advantaged economic development bonds
Investment Holdings [Line Items]
Held-to-maturity, securities in unrealized loss positions	2		2
Held-to-maturity securities portfolio, number of securities	3		3
Aggregate losses, percent			10.30%

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