REGULATORY CAPITAL REQUIREMENTS (Details) $ in Thousands	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Company (consolidated) [Member]
Total capital (to risk weighted assets):
Actual	$ 2,953,734	$ 2,299,003
Actual Ratio	0.1570	0.1604
Capital Required for Capital Adequacy	$ 1,504,816	$ 1,146,816
For Capital Adequacy Purposes Ratio	0.080	0.080
Common Equity Tier One Capital	$ 2,418,180	$ 2,100,158
Common Equity tier One Capital to Risk Weighted Assets	12.86%	14.65%
Common Equity Tier One Capital Required for Capital Adequacy	$ 846,459	$ 645,084
Common Equity Tier One Capital for Capitalized Adequacy to Risk Weighted Assets	4.50%	4.50%
Tier 1 capital (to risk weighted assets):
Actual	$ 2,418,180	$ 2,100,158
Actual Ratio	0.1286	0.1465
For Capital Adequacy Purposes	$ 1,128,612	$ 860,112
For Capital Adequacy Purposes Ratio	0.060	0.060
Tier 1 capital (to average assets):
Actual	$ 2,418,180	$ 2,100,158
Actual Ratio	0.1015	0.1132
For Capital Adequacy Purposes	$ 952,995	$ 741,953
For Capital Adequacy Purposes Ratio	0.040	0.040
Bank [Member]
Total capital (to risk weighted assets):
Actual	$ 2,906,245	$ 2,210,775
Actual Ratio	0.1546	0.1543
Capital Required for Capital Adequacy	$ 1,504,129	$ 1,146,528
For Capital Adequacy Purposes Ratio	0.080	0.080
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 1,880,162	$ 1,433,159
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.100	0.100
Common Equity Tier One Capital	$ 2,728,127	$ 2,072,930
Common Equity tier One Capital to Risk Weighted Assets	14.51%	14.46%
Common Equity Tier One Capital Required for Capital Adequacy	$ 846,073	$ 644,922
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	$ 1,222,105	$ 931,554
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	$ 2,728,127	$ 2,072,930
Actual Ratio	0.1451	0.1446
For Capital Adequacy Purposes	$ 1,128,097	$ 859,896
For Capital Adequacy Purposes Ratio	0.060	0.060
To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 1,504,129	$ 1,146,528
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	0.080	0.080
Tier 1 capital (to average assets):
Actual	$ 2,728,127	$ 2,072,930
Actual Ratio	0.1145	0.1118
For Capital Adequacy Purposes	$ 953,126	$ 741,843
For Capital Adequacy Purposes Ratio	0.040	0.040
To Be Well Capitalized Under Prompt Correction Action Provisions	$ 1,191,407	$ 927,303
To Be Well Capitalized Under Prompt Correction Action Provisions Ratio	0.050	0.050