SECURITIES - Investment Securities Available for Sale in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Fair Value
Less than 12 months	$ 0	$ 7,598
12 months or longer	274,916	518,139
Total	274,916	525,737
Unrealized Losses
Less than 12 months	0	194
12 months or longer	50,843	85,684
Total	50,843	85,878
U.S. Treasury notes and bonds
Fair Value
Less than 12 months		0
12 months or longer		56,906
Total		56,906
Unrealized Losses
Less than 12 months		0
12 months or longer		2,974
Total		2,974
Mortgage-backed securities, residential
Fair Value
Less than 12 months	0	5,006
12 months or longer	247,760	359,722
Total	247,760	364,728
Unrealized Losses
Less than 12 months	0	111
12 months or longer	48,153	75,160
Total	48,153	75,271
Obligations of states and political subdivisions
Fair Value
Less than 12 months	0	107
12 months or longer	9,742	35,398
Total	9,742	35,505
Unrealized Losses
Less than 12 months	0	3
12 months or longer	354	1,551
Total	354	1,554
Corporate bonds and notes
Fair Value
Less than 12 months	0	1,921
12 months or longer	17,414	20,095
Total	17,414	22,016
Unrealized Losses
Less than 12 months	0	79
12 months or longer	2,336	3,655
Total	$ 2,336	3,734
SBA loan pools
Fair Value
Less than 12 months		564
12 months or longer		46,018
Total		46,582
Unrealized Losses
Less than 12 months		1
12 months or longer		2,344
Total		$ 2,345