Quarterly report [Sections 13 or 15(d)]

Loans - Analysis of Past Due Loans, Including Loans on Nonaccrual Status, Disaggregated by Loan Class, Non-PCI (Detail)

v3.25.3
Loans - Analysis of Past Due Loans, Including Loans on Nonaccrual Status, Disaggregated by Loan Class, Non-PCI (Detail) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Financing Receivable, Past Due [Line Items]    
Total Loans $ 6,528,259 $ 6,251,377
Residential    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,043,577 951,302
30-59 Days Past Due | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,961 5,129
60-89 Days Past Due | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   2,975
90 Days or More Past Due | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 299 980
Non-PCI Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 28,907 29,776
Non-PCI Loans | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 4,260 9,084
Non-PCI Loans | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 9,953 14,298
Non-PCI Loans | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,310 6,990
Non-PCI Loans | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 15,644 8,488
Non-PCI Loans | Current    
Financing Receivable, Past Due [Line Items]    
Total Loans 6,499,352 6,221,601
Non-PCI Loans | Current | Residential    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,039,317 942,218
Real Estate    
Financing Receivable, Past Due [Line Items]    
Total Loans 5,058,868 4,900,924
Real Estate | Retail    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,106,438 1,068,978
Real Estate | Hospitality    
Financing Receivable, Past Due [Line Items]    
Total Loans 823,033 848,134
Real Estate | Office    
Financing Receivable, Past Due [Line Items]    
Total Loans 533,031 568,861
Real Estate | Other    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,482,826 1,385,051
Real Estate | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Total Loans 3,945,328 3,871,024
Real Estate | Construction    
Financing Receivable, Past Due [Line Items]    
Total Loans 69,963 78,598
Real Estate | Residential    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,043,577 951,302
Real Estate | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 5,667  
Real Estate | 30-59 Days Past Due | Retail    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 247 975
Real Estate | 30-59 Days Past Due | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 0 516
Real Estate | 30-59 Days Past Due | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,459 1,288
Real Estate | 30-59 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,706  
Real Estate | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,027  
Real Estate | 60-89 Days Past Due | Retail    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,027 855
Real Estate | 60-89 Days Past Due | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 0 (50)
Real Estate | 60-89 Days Past Due | Office    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 0 212
Real Estate | 60-89 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,027  
Real Estate | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 11,818  
Real Estate | 90 Days or More Past Due | Retail    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 554 254
Real Estate | 90 Days or More Past Due | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 399 216
Real Estate | 90 Days or More Past Due | Office    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 10,566  
Real Estate | 90 Days or More Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 11,519  
Real Estate | Current | Office    
Financing Receivable, Past Due [Line Items]    
Total Loans 533,031  
Real Estate | Current | Other    
Financing Receivable, Past Due [Line Items]    
Total Loans   1,385,051
Real Estate | Non-PCI Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 18,512 13,350
Real Estate | Non-PCI Loans | Retail    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,828 2,084
Real Estate | Non-PCI Loans | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 399 682
Real Estate | Non-PCI Loans | Office    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 10,566 212
Real Estate | Non-PCI Loans | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,459 1,288
Real Estate | Non-PCI Loans | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 14,252 4,266
Real Estate | Non-PCI Loans | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   7,908
Real Estate | Non-PCI Loans | 30-59 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   2,779
Real Estate | Non-PCI Loans | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   3,992
Real Estate | Non-PCI Loans | 60-89 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   1,017
Real Estate | Non-PCI Loans | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   1,450
Real Estate | Non-PCI Loans | 90 Days or More Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   470
Real Estate | Non-PCI Loans | Current    
Financing Receivable, Past Due [Line Items]    
Total Loans 5,040,356 4,887,574
Real Estate | Non-PCI Loans | Current | Retail    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,104,610 1,066,894
Real Estate | Non-PCI Loans | Current | Hospitality    
Financing Receivable, Past Due [Line Items]    
Total Loans 822,634 847,452
Real Estate | Non-PCI Loans | Current | Office    
Financing Receivable, Past Due [Line Items]    
Total Loans 522,465 568,649
Real Estate | Non-PCI Loans | Current | Other    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,481,367 1,383,763
Real Estate | Non-PCI Loans | Current | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Total Loans 3,931,076 3,866,758
Real Estate | Non-PCI Loans | Current | Construction    
Financing Receivable, Past Due [Line Items]    
Total Loans 69,963 78,598
Commercial and Industrial    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,052,522 863,431
Commercial and Industrial | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 662 236
Commercial and Industrial | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   132
Commercial and Industrial | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 0 1,278
Commercial and Industrial | Non-PCI Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 662 1,646
Commercial and Industrial | Non-PCI Loans | Current    
Financing Receivable, Past Due [Line Items]    
Total Loans 1,051,860 861,785
Equipment Financing Agreements    
Financing Receivable, Past Due [Line Items]    
Total Loans 416,869 487,022
Equipment Financing Agreements | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,624 6,154
Equipment Financing Agreements | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 2,283 2,866
Equipment Financing Agreements | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,826 5,760
Equipment Financing Agreements | Non-PCI Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 9,733 14,780
Equipment Financing Agreements | Non-PCI Loans | Current    
Financing Receivable, Past Due [Line Items]    
Total Loans $ 407,136 $ 472,242