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
Mar. 31, 2022
Dec. 31, 2021
Financing Receivable, Past Due [Line Items]    
Past due loans receivable $ 9,332 $ 10,716
Loans receivable 5,337,500 5,151,541
30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 5,469 5,038
60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,099 3,442
90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 2,764 2,236
Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable 5,328,168 5,140,825
Real Estate    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,007 3,714
Loans receivable 4,204,258 4,102,411
Real Estate | Retail    
Financing Receivable, Past Due [Line Items]    
Loans receivable 990,716 970,134
Real Estate | Hospitality    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   556
Loans receivable 718,721 717,692
Real Estate | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 602 1,282
Loans receivable 1,974,091 1,919,033
Real Estate | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 602 1,838
Loans receivable 3,683,528 3,606,859
Real Estate | Construction    
Financing Receivable, Past Due [Line Items]    
Loans receivable 87,925 95,006
Real Estate | Residential/Consumer Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 2,405 1,876
Loans receivable 432,805 400,546
Real Estate | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,991 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 120 92
Real Estate | 30-59 Days Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 120 648
Real Estate | 30-59 Days Past Due | Residential/Consumer Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,871 570
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 | 60-89 Days Past Due | Residential/Consumer Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   750
Real Estate | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,016 1,055
Real Estate | 90 Days or More Past Due | Other    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 482 499
Real Estate | 90 Days or More Past Due | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 482 499
Real Estate | 90 Days or More Past Due | Residential/Consumer Loans    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 534 556
Real Estate | Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable 4,201,251 4,098,697
Real Estate | Current | Retail    
Financing Receivable, Past Due [Line Items]    
Loans receivable 990,716 970,134
Real Estate | Current | Hospitality    
Financing Receivable, Past Due [Line Items]    
Loans receivable 718,721 717,136
Real Estate | Current | Other    
Financing Receivable, Past Due [Line Items]    
Loans receivable 1,973,489 1,917,751
Real Estate | Current | Total commercial property loans    
Financing Receivable, Past Due [Line Items]    
Loans receivable 3,682,926 3,605,021
Real Estate | Current | Construction    
Financing Receivable, Past Due [Line Items]    
Loans receivable 87,925 95,006
Real Estate | Current | Residential/Consumer Loans    
Financing Receivable, Past Due [Line Items]    
Loans receivable 430,400 398,670
Commercial and Industrial    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 64 65
Loans receivable 633,107 561,831
Commercial and Industrial | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 64 56
Commercial and Industrial | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable   9
Commercial and Industrial | Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable 633,043 561,766
Leases Receivable    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 6,261 6,937
Loans receivable 500,135 487,299
Leases Receivable | 30-59 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 3,414 3,764
Leases Receivable | 60-89 Days Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,099 1,992
Leases Receivable | 90 Days or More Past Due    
Financing Receivable, Past Due [Line Items]    
Past due loans receivable 1,748 1,181
Leases Receivable | Current    
Financing Receivable, Past Due [Line Items]    
Loans receivable $ 493,874 $ 480,362