v3.26.3
FAIR VALUE DISCLOSURES - Summary of Financial Assets and Liabilities Measure at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Assets          
Investment securities available-for-sale $ 4,635,304   $ 4,635,304   $ 3,971,932
Loans Held-for-sale, Fair Value Disclosure 23,000   23,000   17,000
Derivative Asset 394,857   394,857   393,867
Liabilities          
Derivative liabilities 395,233   395,233   393,652
Fair Value, Option, Changes in Fair Value, Gain (Loss) (800) $ 200 (500) $ 900  
Financing Receivable, Held-for-Sale 22,300   22,300   15,800
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables 700   700   1,200
Fair Value, Measurements, Recurring          
Assets          
Investment securities available-for-sale 4,635,304   4,635,304   3,971,932
Loans Held-for-sale, Fair Value Disclosure 22,958   22,958   16,953
Derivative Asset         69,481
Total 5,053,723   5,053,723   4,382,824
Liabilities          
Total 395,272   395,272   393,820
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1 | Fair value          
Assets          
Loans Held-for-sale, Fair Value Disclosure 0   0   0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1          
Assets          
Investment securities available-for-sale 95   95   95
Derivative Asset         0
Total 95   95   95
Liabilities          
Total 0   0   0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Fair value          
Assets          
Loans Held-for-sale, Fair Value Disclosure 22,958   22,958   16,953
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2          
Assets          
Investment securities available-for-sale 4,597,315   4,597,315   3,926,021
Derivative Asset         69,481
Total 5,015,734   5,015,734   4,336,913
Liabilities          
Total 395,272   395,272   393,820
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3 | Fair value          
Assets          
Loans Held-for-sale, Fair Value Disclosure 0   0   0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3          
Assets          
Investment securities available-for-sale 37,894   37,894   45,816
Derivative Asset         0
Total 37,894   37,894   45,816
Liabilities          
Total 0   0   0
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring          
Assets          
Derivative Asset 93,210   93,210    
Liabilities          
Derivative liabilities 92,570   92,570   69,570
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1          
Assets          
Derivative Asset 0   0    
Liabilities          
Derivative liabilities 0   0   0
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2          
Assets          
Derivative Asset 93,210   93,210    
Liabilities          
Derivative liabilities 92,570   92,570   69,570
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3          
Assets          
Derivative Asset 0   0    
Liabilities          
Derivative liabilities 0   0   0
Foreign Exchange | Fair Value, Measurements, Recurring          
Assets          
Derivative Asset 287,738   287,738   322,172
Liabilities          
Derivative liabilities 287,738   287,738   322,172
Foreign Exchange | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1          
Assets          
Derivative Asset 0   0   0
Liabilities          
Derivative liabilities 0   0   0
Foreign Exchange | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2          
Assets          
Derivative Asset 287,738   287,738   322,172
Liabilities          
Derivative liabilities 287,738   287,738   322,172
Foreign Exchange | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3          
Assets          
Derivative Asset 0   0   0
Liabilities          
Derivative liabilities 0   0   0
Cash Flow Hedging | Fair Value, Measurements, Recurring          
Assets          
Derivative Asset 0   0   708
Liabilities          
Derivative liabilities 776   776   0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1          
Assets          
Derivative Asset 0   0   0
Liabilities          
Derivative liabilities 0   0   0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2          
Assets          
Derivative Asset 0   0   708
Liabilities          
Derivative liabilities 776   776   0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3          
Assets          
Derivative Asset 0   0   0
Liabilities          
Derivative liabilities 0   0   0
Commodity | Fair Value, Measurements, Recurring          
Assets          
Derivative Asset 14,513   14,513   1,578
Liabilities          
Derivative liabilities 14,188   14,188   2,078
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1          
Assets          
Derivative Asset 0   0   0
Liabilities          
Derivative liabilities 0   0   0
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2          
Assets          
Derivative Asset 14,513   14,513   1,578
Liabilities          
Derivative liabilities 14,188   14,188   2,078
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3          
Assets          
Derivative Asset 0   0   0
Liabilities          
Derivative liabilities $ 0   $ 0   $ 0