Quarterly report pursuant to Section 13 or 15(d)

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

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Loans - Analysis of Past Due Loans, Disaggregated by Loan Class, Non-PCI (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Financing Receivable, Past Due [Line Items]    
Past due loans receivable $ 8,508 $ 10,716
Loans receivable 5,655,402 5,151,541
Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,617 1,876
Loans receivable 521,576 400,546
30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 4,696 5,038
30-59 Days Past Due | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,078 570
60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 595 3,442
60-89 Days Past Due | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   750
90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,217 2,236
90 Days or More Past Due | Residential    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 539 556
Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable 5,646,894 5,140,825
Current | Residential    
Financing Receivable, Past Due [Line Items]    
Loans receivable 519,959 398,670
Real Estate    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 2,948 3,714
Loans receivable 4,351,150 4,102,411
Real Estate | Retail    
Financing Receivable, Past Due [Line Items]    
Loans receivable 1,071,379 970,134
Real Estate | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   556
Loans receivable 651,586 717,692
Real Estate | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,331 1,282
Loans receivable 2,011,727 1,919,033
Real Estate | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,331 1,838
Loans receivable 3,734,692 3,606,859
Real Estate | Construction    
Financing Receivable, Past Due [Line Items]    
Loans receivable 94,882 95,006
Real Estate | Residential    
Financing Receivable, Past Due [Line Items]    
Loans receivable 521,576 400,546
Real Estate | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,347 1,218
Real Estate | 30-59 Days Past Due | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   556
Real Estate | 30-59 Days Past Due | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 269 92
Real Estate | 30-59 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 269 648
Real Estate | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   1,441
Real Estate | 60-89 Days Past Due | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   691
Real Estate | 60-89 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   691
Real Estate | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,601 1,055
Real Estate | 90 Days or More Past Due | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,062 499
Real Estate | 90 Days or More Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,062 499
Real Estate | Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable 4,348,202 4,098,697
Real Estate | Current | Retail    
Financing Receivable, Past Due [Line Items]    
Loans receivable 1,071,379 970,134
Real Estate | Current | Hospitality    
Financing Receivable, Past Due [Line Items]    
Loans receivable 651,586 717,136
Real Estate | Current | Other    
Financing Receivable, Past Due [Line Items]    
Loans receivable 2,010,396 1,917,751
Real Estate | Current | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Loans receivable 3,733,361 3,605,021
Real Estate | Current | Construction    
Financing Receivable, Past Due [Line Items]    
Loans receivable 94,882 95,006
Commercial and Industrial    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 71 65
Loans receivable 766,894 561,831
Commercial and Industrial | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 63 56
Commercial and Industrial | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 8 9
Commercial and Industrial | Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable 766,823 561,766
Equipment Financing Agreements    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 5,489 6,937
Loans receivable 537,358 487,299
Equipment Financing Agreements | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,286 3,764
Equipment Financing Agreements | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 587 1,992
Equipment Financing Agreements | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,616 1,181
Equipment Financing Agreements | Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable $ 531,869 $ 480,362