OTHER COMPREHENSIVE INCOME - AOCI Changes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Summary of the AOCI balances, net of tax
Balance at beginning of period	$ 842,174	$ 845,090	$ 834,232	$ 823,323
Current Year Change	(11,634)	(1,415)	(35,162)	(3,361)
Balance at end of period	840,958	838,657	840,958	838,657
Accumulated Other Comprehensive Income
Summary of the AOCI balances, net of tax
Balance at beginning of period	(21,654)	6,563	1,874	8,509
Current Year Change			(35,162)	(3,361)
Balance at end of period	(33,288)	5,148	(33,288)	5,148
Unrealized gain (loss) on AFS debt securities
Summary of the AOCI balances, net of tax
Balance at beginning of period			890	7,571
Current Year Change			(35,169)	(3,407)
Balance at end of period	(34,279)	4,164	(34,279)	4,164
Unrealized gain on AFS debt security for which a portion of OTTI has been recognized in earnings
Summary of the AOCI balances, net of tax
Balance at beginning of period			984	938
Current Year Change			7	46
Balance at end of period	$ 991	$ 984	$ 991	$ 984