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SHAREHOLDERS' EQUITY - Regulatory Capital Requirements (Details) $ in Thousands		Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Consolidated
Common Equity Tier 1 (to Risk Weighted Assets)
Common Equity Tier 1 Capital		$ 739,351	$ 690,296
Common Equity Tier 1 Capital for Capital Adequacy Purposes		$ 255,228	$ 252,954
Common Equity Tier 1 (to Risk Weighted Assets) Ratios [Abstract]
Common Equity Tier 1 Capital to Risk Weighted Assets		0.1304	0.1228
Common Equity Tier 1 Capital Required for Capital Adequacy Purposes to Risk Weighted Assets		0.0450	0.0450
Tier 1 Capital (to Risk Weighted Assets)
Tier 1 Capital		$ 797,814	$ 748,755
Tier 1 Capital Required for Capital Adequacy Purposes		$ 340,304	$ 337,273
Tier 1 Capital (to Risk Weighted Assets) Ratios
Tier 1 Capital to Risk Weighted Assets		0.1407	0.1332
Tier 1 Capital Required for Capital Adequacy Purposes to Risk Weighted Assets		0.0600	0.0600
Total Capital (to Risk Weighted Assets)
Total Capital		$ 935,308	$ 884,095
Total Capital Required for Capital Adequacy Purposes		$ 453,739	$ 449,697
Total Capital (to Risk Weighted Assets) Ratios
Total Capital to Risk Weighted Assets		0.1649	0.1573
Total Capital Required for Capital Adequacy Purposes to Risk Weighted Assets		0.0800	0.0800
Tier 1 Capital (to Average Assets)
Tier 1 Capital	[1]	$ 797,814	$ 748,755
Tier 1 Capital Required for Capital Adequacy Purposes	[1]	$ 330,155	$ 318,906
Tier 1 Capital (to Average Assets) Ratios
Tier 1 Capital to Average Assets	[1]	0.0967	0.0939
Tier 1 Capital Required for Capital Adequacy Purposes to Average Assets	[1]	0.0400	0.0400
Bank Only
Common Equity Tier 1 (to Risk Weighted Assets)
Common Equity Tier 1 Capital		$ 870,541	$ 836,228
Common Equity Tier 1 Capital for Capital Adequacy Purposes		255,183	252,865
Common Equity Tier 1 Capital to be Well Capitalized		$ 368,598	$ 365,249
Common Equity Tier 1 (to Risk Weighted Assets) Ratios [Abstract]
Common Equity Tier 1 Capital to Risk Weighted Assets		0.1535	0.1488
Common Equity Tier 1 Capital Required for Capital Adequacy Purposes to Risk Weighted Assets		0.0450	0.0450
Common Equity Tier 1 Capital Required to be Well Capitalized to Risk Weighted Assets		0.0650	0.0650
Tier 1 Capital (to Risk Weighted Assets)
Tier 1 Capital		$ 870,541	$ 836,228
Tier 1 Capital Required for Capital Adequacy Purposes		340,244	337,153
Tier 1 Capital Required to be Well Capitalized		$ 453,659	$ 449,537
Tier 1 Capital (to Risk Weighted Assets) Ratios
Tier 1 Capital to Risk Weighted Assets		0.1535	0.1488
Tier 1 Capital Required for Capital Adequacy Purposes to Risk Weighted Assets		0.0600	0.0600
Tier 1 Capital Required to be Well Capitalized to Risk Weighted Assets		0.0800	0.0800
Total Capital (to Risk Weighted Assets)
Total Capital		$ 915,993	$ 877,691
Total Capital Required for Capital Adequacy Purposes		453,659	449,537
Total Capital Required to be Well Capitalized		$ 567,074	$ 561,922
Total Capital (to Risk Weighted Assets) Ratios
Total Capital to Risk Weighted Assets		0.1615	0.1562
Total Capital Required for Capital Adequacy Purposes to Risk Weighted Assets		0.0800	0.0800
Total Capital Required to be Well Capitalized to Risk Weighted Assets		0.1000	0.1000
Tier 1 Capital (to Average Assets)
Tier 1 Capital	[1]	$ 870,541	$ 836,228
Tier 1 Capital Required for Capital Adequacy Purposes	[1]	330,042	318,814
Tier 1 Capital Required to be Well Capitalized	[1]	$ 412,553	$ 398,517
Tier 1 Capital (to Average Assets) Ratios
Tier 1 Capital to Average Assets	[1]	0.1055	0.1049
Tier 1 Capital Required for Capital Adequacy Purposes to Average Assets	[1]	0.0400	0.0400
Tier 1 Capital Required to be Well Capitalized to Average Assets	[1]	0.0500	0.0500
[1] Refers to quarterly average assets as calculated in accordance with policies established by bank regulatory agencies.

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