XML 88 R75.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Subordinated Debentures - Preferred Trust Securities and Subordinated Debt Securities (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jan. 18, 2022
Jun. 30, 2024
Dec. 31, 2023
Debt Instrument [Line Items]      
Total   $ 439,542 $ 439,834
Subordinated notes, net of issuance costs, issued in 2020, due 2030, fixed rate of 5.50% during the first five years and at a floating rate of 534.5 basis points above the then three-month SOFR rate, reset quarterly, thereafter, callable in 2025 without penalty | Subordinated debt securities      
Debt Instrument [Line Items]      
Total   $ 141,428 142,084
Fixed rate   5.50%  
Subordinated notes, net of issuance costs, issued in 2020, due 2030, fixed rate of 5.50% during the first five years and at a floating rate of 534.5 basis points above the then three-month SOFR rate, reset quarterly, thereafter, callable in 2025 without penalty | Subordinated debt securities | Variable Rate Component One      
Debt Instrument [Line Items]      
Floating rate   5.345%  
Subordinated notes, net of issuance costs, issued in 2022, due 2032, fixed rate of 3.125% during the first five years and at a floating rate of 182 basis points above the then three-month SOFR rate, reset quarterly, thereafter, callable in 2027 without penalty | Variable Rate Component One      
Debt Instrument [Line Items]      
Floating rate 1.82%    
Subordinated notes, net of issuance costs, issued in 2022, due 2032, fixed rate of 3.125% during the first five years and at a floating rate of 182 basis points above the then three-month SOFR rate, reset quarterly, thereafter, callable in 2027 without penalty | Subordinated debt securities      
Debt Instrument [Line Items]      
Total   $ 298,114 $ 297,750
Fixed rate   3.125%  
Subordinated notes, net of issuance costs, issued in 2022, due 2032, fixed rate of 3.125% during the first five years and at a floating rate of 182 basis points above the then three-month SOFR rate, reset quarterly, thereafter, callable in 2027 without penalty | Subordinated debt securities | Variable Rate Component One      
Debt Instrument [Line Items]      
Floating rate   1.82%