XML 107 R94.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Financial Instruments - Estimated Fair Values of Financial Instruments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities - available for sale $ 3,344,539 $ 3,507,841
Investment securities - held-to-maturity 1,159,160 1,170,481
Fair Value, Inputs, Level 1 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 1,058,716 1,000,213
Federal funds sold   5,100
Accrued interest receivable 120,984 118,966
Marketable equity securities 50,147 49,419
Demand and non-interest bearing 4,068,302 4,085,501
Savings and interest-bearing transaction accounts 11,150,516 11,050,347
Securities sold under agreements to repurchase 137,996 142,085
Accrued interest payable 35,559 19,124
Fair Value, Inputs, Level 1 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 1,058,716 1,000,213
Federal funds sold   5,100
Accrued interest receivable 120,984 118,966
Marketable equity securities 50,147 49,419
Demand and non-interest bearing 4,068,302 4,085,501
Savings and interest-bearing transaction accounts 11,150,516 11,050,347
Securities sold under agreements to repurchase 137,996 142,085
Accrued interest payable 35,559 19,124
Fair Value, Inputs, Level 2 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities - available for sale 3,344,539 3,507,841
Investment securities - held-to-maturity 1,278,853 1,281,982
FHLB and other borrowed funds 1,301,050 1,301,300
Fair Value, Inputs, Level 2 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Investment securities - available for sale 3,344,539 3,507,841
Investment securities - held-to-maturity 1,159,160 1,170,481
FHLB and other borrowed funds 1,281,175 1,291,926
Fair Value, Inputs, Level 3 | Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans receivable, net of impaired loans and allowance 14,393,901 14,048,002
FHLB, FRB & FNBB Bank stock; other equity investments 227,067 223,748
Time deposits 1,736,985 1,651,863
Subordinated debentures 439,542 439,834
Fair Value, Inputs, Level 3 | Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans receivable, net of impaired loans and allowance 14,334,637 14,071,775
FHLB, FRB & FNBB Bank stock; other equity investments 227,067 223,748
Time deposits 1,718,037 1,633,091
Subordinated debentures $ 379,572 $ 358,682