COMPREHENSIVE (LOSS) INCOME - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 599,794	$ 649,065	$ 616,976	$ 679,261
Balance at end of period	595,532	624,478	595,532	624,478
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(42,410)	(19,047)	(47,082)	(1,637)
Other comprehensive income (loss) before reclassifications	(3,788)	(19,384)	3,131	(41,524)
Amounts reclassified from accumulated other comprehensive (loss) income	(1,173)	(71)	(2,191)	40
Net current period other comprehensive (loss) income	(4,961)	(19,455)	940	(41,484)
Related tax effect	1,081	4,235	(148)	8,854
Balance at end of period	(46,290)	(34,267)	(46,290)	(34,267)
Securities available for sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(47,686)	(23,048)	(53,212)	(2,834)
Other comprehensive income (loss) before reclassifications	(5,366)	(20,323)	1,723	(46,252)
Net current period other comprehensive (loss) income	(5,366)	(20,323)	1,723	(46,252)
Related tax effect	1,205	4,479	(358)	10,194
Balance at end of period	(51,847)	(38,892)	(51,847)	(38,892)
Cash flow hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	5,126	4,001	5,980	1,197
Other comprehensive income (loss) before reclassifications	1,577	939	1,407	4,728
Amounts reclassified from accumulated other comprehensive (loss) income	(1,134)	(71)	(2,152)	40
Net current period other comprehensive (loss) income	443	868	(745)	4,768
Related tax effect	(124)	(244)	210	(1,340)
Balance at end of period	5,445	$ 4,625	5,445	$ 4,625
Postretirement Benefit
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	150		150
Other comprehensive income (loss) before reclassifications	1		1
Amounts reclassified from accumulated other comprehensive (loss) income	(39)		(39)
Net current period other comprehensive (loss) income	(38)		(38)
Balance at end of period	$ 112		$ 112