Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details)

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FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
ASSETS    
Cash and cash equivalents $ 446,014 $ 378,131
AFS Securities 2,555,723 2,231,261
HTM securities 766,472 808,074
Restricted stock 125,308 115,472
LHFS 12,906 6,710
LHFI, net of deferred fees and costs 17,668,481 15,148,256
Financial Derivatives 102,611 93,027
Accrued interest receivable 101,138 91,370
Bank owned life insurance 489,550 452,565
LIABILITIES    
Deposits 19,975,792 16,799,791
Borrowings 1,136,737 1,154,694
Accrued interest payable 24,704 20,528
Financial Derivatives 227,023 206,561
Fair Value, Inputs, Level 1 [Member]    
ASSETS    
Cash and cash equivalents 446,014 378,131
AFS Securities 60,996 61,311
HTM securities 0 0
Restricted stock 0 0
LHFS 0 0
LHFI, net of deferred fees and costs 0 0
Financial Derivatives 0 0
Accrued interest receivable 0 0
Bank owned life insurance 0 0
LIABILITIES    
Deposits 0 0
Borrowings 0 0
Accrued interest payable 0 0
Financial Derivatives 0 0
Fair Value, Inputs, Level 2 [Member]    
ASSETS    
Cash and cash equivalents 0 0
AFS Securities 2,494,727 2,169,950
HTM securities 765,265 806,834
Restricted stock 125,308 115,472
LHFS 12,906 6,710
LHFI, net of deferred fees and costs 0 0
Financial Derivatives 102,611 93,027
Accrued interest receivable 101,138 91,370
Bank owned life insurance 489,550 452,565
LIABILITIES    
Deposits 19,975,792 16,799,791
Borrowings 1,136,737 1,154,694
Accrued interest payable 24,704 20,528
Financial Derivatives 227,023 206,561
Fair Value, Inputs, Level 3 [Member]    
ASSETS    
Cash and cash equivalents 0 0
AFS Securities 0 0
HTM securities 1,207 1,240
Restricted stock 0 0
LHFS 0 0
LHFI, net of deferred fees and costs 17,668,481 15,148,256
Financial Derivatives 0 0
Accrued interest receivable 0 0
Bank owned life insurance 0 0
LIABILITIES    
Deposits 0 0
Borrowings 0 0
Accrued interest payable 0 0
Financial Derivatives 0 0
Reported Value Measurement [Member]    
ASSETS    
Cash and cash equivalents 446,014 378,131
AFS Securities 2,555,723 2,231,261
HTM securities 810,450 837,378
Restricted stock 125,308 115,472
LHFS 12,906 6,710
LHFI, net of deferred fees and costs 18,347,190 15,635,043
Financial Derivatives 102,611 93,027
Accrued interest receivable 101,138 91,370
Bank owned life insurance 489,550 452,565
LIABILITIES    
Deposits 20,000,877 16,818,129
Borrowings 1,206,734 1,311,858
Accrued interest payable 24,704 20,528
Financial Derivatives $ 227,023 $ 206,561