v3.26.1
FAIR VALUE DISCLOSURES - Summary of Financial Assets and Liabilities Measure at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Assets      
Investment securities available-for-sale $ 4,953,023   $ 3,971,932
Loans Held-for-sale, Fair Value Disclosure 18,300   17,000
Derivative Asset 463,853   393,867
Liabilities      
Derivative liabilities 462,845   393,652
Fair Value, Option, Changes in Fair Value, Gain (Loss) 300 $ 500  
Financing Receivable, Held-for-Sale 16,700   15,800
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables 1,500   1,200
Fair Value, Measurements, Recurring      
Assets      
Investment securities available-for-sale 4,953,023   3,971,932
Derivative Asset     69,481
Total 5,435,484   4,382,824
Liabilities      
Total 462,951   393,820
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Fair value      
Assets      
Loans Held-for-sale, Fair Value Disclosure 0   0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1      
Assets      
Investment securities available-for-sale 95   95
Derivative Asset     0
Total 95   95
Liabilities      
Total 0   0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Fair value      
Assets      
Loans Held-for-sale, Fair Value Disclosure 18,280   16,953
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2      
Assets      
Investment securities available-for-sale 4,916,487   3,926,021
Derivative Asset     69,481
Total 5,398,948   4,336,913
Liabilities      
Total 462,951   393,820
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Fair value      
Assets      
Loans Held-for-sale, Fair Value Disclosure 0   0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3      
Assets      
Investment securities available-for-sale 36,441   45,816
Derivative Asset     0
Total 36,441   45,816
Liabilities      
Total 0   0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1, 2 and 3      
Assets      
Loans Held-for-sale, Fair Value Disclosure 18,280   16,953
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring      
Assets      
Derivative Asset 66,116    
Liabilities      
Derivative liabilities 65,868   69,570
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1      
Assets      
Derivative Asset 0    
Liabilities      
Derivative liabilities 0   0
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2      
Assets      
Derivative Asset 66,116    
Liabilities      
Derivative liabilities 65,868   69,570
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3      
Assets      
Derivative Asset 0    
Liabilities      
Derivative liabilities 0   0
Foreign Exchange | Fair Value, Measurements, Recurring      
Assets      
Derivative Asset 391,874   322,172
Liabilities      
Derivative liabilities 391,874   322,172
Foreign Exchange | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1      
Assets      
Derivative Asset 0   0
Liabilities      
Derivative liabilities 0   0
Foreign Exchange | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2      
Assets      
Derivative Asset 391,874   322,172
Liabilities      
Derivative liabilities 391,874   322,172
Foreign Exchange | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3      
Assets      
Derivative Asset 0   0
Liabilities      
Derivative liabilities 0   0
Cash Flow Hedging | Fair Value, Measurements, Recurring      
Assets      
Derivative Asset 465   708
Liabilities      
Derivative liabilities     0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1      
Assets      
Derivative Asset 0   0
Liabilities      
Derivative liabilities     0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2      
Assets      
Derivative Asset 465   708
Liabilities      
Derivative liabilities     0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3      
Assets      
Derivative Asset 0   0
Liabilities      
Derivative liabilities     0
Commodity | Fair Value, Measurements, Recurring      
Assets      
Derivative Asset 5,726   1,578
Liabilities      
Derivative liabilities 5,209   2,078
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1      
Assets      
Derivative Asset 0   0
Liabilities      
Derivative liabilities 0   0
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2      
Assets      
Derivative Asset 5,726   1,578
Liabilities      
Derivative liabilities 5,209   2,078
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3      
Assets      
Derivative Asset 0   0
Liabilities      
Derivative liabilities $ 0   $ 0