SECURITIES - Investment Securities Available for Sale in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair Value
Less than 12 months	$ 40,939	$ 137,597
12 months or longer	562,190	468,381
Total	603,129	606,916
Unrealized Losses
Less than 12 months	939	9,999
12 months or longer	87,994	86,767
Total	88,933	96,766
U.S. Treasury notes and bonds
Fair Value
Less than 12 months	1,107	1,011
12 months or longer	55,221	54,563
Total	56,328	55,574
Unrealized Losses
Less than 12 months	16	30
12 months or longer	5,275	6,195
Total	5,291	6,225
Mortgage-backed securities, residential
Fair Value
Less than 12 months	7,594	79,891
12 months or longer	425,060	355,240
Total	432,654	435,131
Unrealized Losses
Less than 12 months	477	7,621
12 months or longer	75,775	76,086
Total	76,252	83,707
Obligations of states and political subdivisions
Fair Value
Less than 12 months	20,209	37,847
12 months or longer	12,962	0
Total	33,171	38,785
Unrealized Losses
Less than 12 months	176	938
12 months or longer	224	0
Total	400	938
Corporate bonds and notes
Fair Value
Less than 12 months	2,750	4,515
12 months or longer	12,064	7,455
Total	14,814	11,970
Unrealized Losses
Less than 12 months	250	485
12 months or longer	4,870	3,295
Total	5,120	3,780
SBA loan pools
Fair Value
Less than 12 months	9,279	14,333
12 months or longer	56,883	51,123
Total	66,162	65,456
Unrealized Losses
Less than 12 months	20	925
12 months or longer	1,850	1,191
Total	$ 1,870	$ 2,116