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, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Assets
Investment securities available-for-sale		$ 3,157,265		$ 3,021,126
Loans Held-for-sale, Fair Value Disclosure		12,700		9,200
Derivative Asset		278,539		269,776
Liabilities
Derivative liabilities		274,218		263,131
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ (100)	400	$ 600
Financing Receivable, Held-for-Sale		11,600		8,500
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables		1,100		700
Fair Value, Measurements, Recurring
Assets
Investment securities available-for-sale		3,157,265		3,021,126
Derivative Asset				117,344
Total		3,448,537		3,300,135
Liabilities
Total		274,694		263,661
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		92		31,243
Derivative Asset				0
Total		92		31,243
Liabilities
Total		0		0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2 | Fair value
Assets
Loans Held-for-sale, Fair Value Disclosure		12,685		9,213
Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2
Assets
Investment securities available-for-sale		3,111,093		2,956,938
Derivative Asset				117,344
Total		3,402,365		3,235,947
Liabilities
Total		274,694		263,661
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		46,080		32,945
Derivative Asset				0
Total		46,080		32,945
Liabilities
Total		0		0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1, 2 and 3
Assets
Loans Held-for-sale, Fair Value Disclosure		12,685		9,213
Interest Rate Contract [Member] | Fair Value, Measurements, Recurring
Assets
Derivative Asset		91,653
Liabilities
Derivative liabilities		92,257		118,105
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		91,653
Liabilities
Derivative liabilities		92,257		118,105
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		182,282		145,556
Liabilities
Derivative liabilities		182,282		145,556
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		182,282		145,556
Liabilities
Derivative liabilities		182,282		145,556
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		4,497		6,896
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1
Assets
Derivative Asset		0		0
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2
Assets
Derivative Asset		4,497		6,896
Cash Flow Hedging | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3
Assets
Derivative Asset		0		$ 0
Commodity | Fair Value, Measurements, Recurring
Assets
Derivative Asset		155
Liabilities
Derivative liabilities		155
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 1
Assets
Derivative Asset		0
Liabilities
Derivative liabilities		0
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 2
Assets
Derivative Asset		155
Liabilities
Derivative liabilities		155
Commodity | Fair Value, Measurements, Recurring | Fair Value Measurements Using Level 3
Assets
Derivative Asset		0
Liabilities
Derivative liabilities		$ 0