Annual report [Section 13 and 15(d), not S-K Item 405]

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
Dec. 31, 2024
Dec. 31, 2023
ASSETS    
Cash and cash equivalents $ 354,074 $ 378,131
AFS Securities 2,442,166 2,231,261
HTM securities 759,335 808,074
Restricted stock 102,954 115,472
LHFS 9,420 6,710
LHFI, net of deferred fees and costs 17,896,688 15,148,256
Financial Derivatives 97,445 93,027
Accrued interest receivable 92,541 91,370
Bank owned life insurance 493,396 452,565
LIABILITIES    
Deposits 20,393,673 16,799,791
Borrowings 471,671 1,154,694
Accrued interest payable 26,214 20,528
Financial Derivatives 199,548 206,561
Fair Value, Inputs, Level 1 [Member]    
ASSETS    
Cash and cash equivalents 354,074 378,131
AFS Securities 62,199 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 2,379,967 2,169,950
HTM securities 758,400 806,834
Restricted stock 102,954 115,472
LHFS 9,420 6,710
LHFI, net of deferred fees and costs 0 0
Financial Derivatives 97,445 93,027
Accrued interest receivable 92,541 91,370
Bank owned life insurance 493,396 452,565
LIABILITIES    
Deposits 20,393,673 16,799,791
Borrowings 471,671 1,154,694
Accrued interest payable 26,214 20,528
Financial Derivatives 199,548 206,561
Fair Value, Inputs, Level 3 [Member]    
ASSETS    
Cash and cash equivalents 0 0
AFS Securities 0 0
HTM securities 935 1,240
Restricted stock 0 0
LHFS 0 0
LHFI, net of deferred fees and costs 17,896,688 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 354,074 378,131
AFS Securities 2,442,166 2,231,261
HTM securities 803,851 837,378
Restricted stock 102,954 115,472
LHFS 9,420 6,710
LHFI, net of deferred fees and costs 18,470,621 15,635,043
Financial Derivatives 97,445 93,027
Accrued interest receivable 92,541 91,370
Bank owned life insurance 493,396 452,565
LIABILITIES    
Deposits 20,397,619 16,818,129
Borrowings 534,578 1,311,858
Accrued interest payable 26,214 20,528
Financial Derivatives $ 199,548 $ 206,561