REGULATORY CAPITAL REQUIREMENTS (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Company (consolidated) [Member]
Total capital (to risk weighted assets):
Actual	$ 2,299,003	$ 2,268,863
Actual Ratio	0.1604	0.1591
Capital Required for Capital Adequacy	$ 1,146,816	$ 1,140,554
For Capital Adequacy Purposes Ratio	0.080	0.080
Common Equity Tier One Capital	$ 2,100,158	$ 2,022,873
Common Equity tier One Capital to Risk Weighted Assets	14.65%	14.19%
Common Equity Tier One Capital Required for Capital Adequacy	$ 645,084	$ 641,562
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets	4.50%	4.50%
Tier 1 capital (to risk weighted assets):
Actual	$ 2,100,158	$ 2,022,873
Actual Ratio	0.1465	0.1419
For Capital Adequacy Purposes	$ 860,112	$ 855,416
For Capital Adequacy Purposes Ratio	0.060	0.060
Tier 1 capital (to average assets):
Actual	$ 2,100,158	$ 2,022,873
Actual Ratio	0.1132	0.1096
For Capital Adequacy Purposes	$ 741,953	$ 737,984
For Capital Adequacy Purposes Ratio	0.040	0.040
Bank [Member]
Total capital (to risk weighted assets):
Actual	$ 2,210,775	$ 2,183,436
Actual Ratio	0.1543	0.1532
Capital Required for Capital Adequacy	$ 1,146,528	$ 1,140,550
For Capital Adequacy Purposes Ratio	0.080	0.080
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 1,433,159	$ 1,425,687
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.100	0.100
Common Equity Tier One Capital	$ 2,072,930	$ 2,048,426
Common Equity tier One Capital to Risk Weighted Assets	14.46%	14.37%
Common Equity Tier One Capital Required for Capital Adequacy	$ 644,922	$ 641,559
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets	4.50%	4.50%
Common Equity Tier 1 Capital to be Well Capitalized	$ 931,554	$ 926,696
Common Equity Tier One Capital to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Tier 1 capital (to risk weighted assets):
Actual	$ 2,072,930	$ 2,048,426
Actual Ratio	0.1446	0.1437
For Capital Adequacy Purposes	$ 859,896	$ 855,412
For Capital Adequacy Purposes Ratio	0.060	0.060
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 1,146,528	$ 1,140,550
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.080	0.080
Tier 1 capital (to average assets):
Actual	$ 2,072,930	$ 2,048,426
Actual Ratio	0.1118	0.1110
For Capital Adequacy Purposes	$ 741,843	$ 738,055
For Capital Adequacy Purposes Ratio	0.040	0.040
To Be Well Capitalized Under Prompt Correction Action Provisions	$ 927,303	$ 922,568
To Be Well Capitalized Under Prompt Correction Action Provisions Ratio	0.050	0.050