SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value
Total	$ 0
Agency notes
Fair Value
12 Consecutive Months or Longer	9,409	$ 9,371
Total	9,409	9,371
Unrealized Losses
12 Consecutive Months or Longer	591	629
Total	591	629
Treasury securities
Fair Value
12 Consecutive Months or Longer	228,171	234,190
Total	228,171	234,190
Unrealized Losses
12 Consecutive Months or Longer	10,451	11,687
Total	10,451	11,687
Corporate securities
Fair Value
Less than 12 Consecutive Months	6,337	20,935
12 Consecutive Months or Longer	128,603	130,235
Total	134,940	151,170
Unrealized Losses
Less than 12 Consecutive Months	500	917
12 Consecutive Months or Longer	19,464	22,891
Total	19,964	23,808
Pass-through MBS issued by GSEs
Fair Value
12 Consecutive Months or Longer	194,066	203,469
Total	194,066	203,469
Unrealized Losses
12 Consecutive Months or Longer	25,806	24,978
Total	25,806	24,978
Agency CMOs
Fair Value
Less than 12 Consecutive Months	2,459
12 Consecutive Months or Longer	242,361	251,900
Total	244,820	251,900
Unrealized Losses
Less than 12 Consecutive Months	11
12 Consecutive Months or Longer	47,614	46,491
Total	47,625	46,491
State and municipal obligations
Fair Value
Less than 12 Consecutive Months	3,489	1,796
12 Consecutive Months or Longer	22,186	21,513
Total	25,675	23,309
Unrealized Losses
Less than 12 Consecutive Months	11	54
12 Consecutive Months or Longer	1,968	1,878
Total	$ 1,979	$ 1,932