Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Loans - Analysis of Past Due Loans, Disaggregated by Loan Class, Non-PCI (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans $ 3,552,659 $ 3,183,316  
Real estate loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 3,210,687 2,845,514  
Real estate loans [Member] | Hospitality [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 622,280 543,425  
Real estate loans [Member] | Gas station [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 274,385 323,655  
Real estate loans [Member] | Construction [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 67,439 23,387  
Real estate loans [Member] | Residential property [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 330,675 236,036  
Commercial and industrial loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 319,656 312,876  
Commercial and industrial loans [Member] | Commercial term [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 144,889 152,773  
Commercial and industrial loans [Member] | Commercial lines of credit [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 145,738 128,224  
Commercial and industrial loans [Member] | International loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 29,029 31,879  
Consumer loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 22,316 24,926  
30-59 Days Past Due | Commercial and industrial loans [Member] | International loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 9,971 15,374  
Current 3,527,148 3,147,928  
Total Loans 3,537,119 3,163,302 $ 3,019,927
Non-PCI Loans [Member] | Real estate loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 3,195,332 2,825,718  
Non-PCI Loans [Member] | Real estate loans [Member] | Retail [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 523 1,183  
Current 819,081 734,318  
Total Loans 819,604 735,501  
Non-PCI Loans [Member] | Real estate loans [Member] | Hospitality [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 2,143 5,139  
Current 616,212 534,206  
Total Loans 618,355 539,345  
Non-PCI Loans [Member] | Real estate loans [Member] | Gas station [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 4,095 2,882  
Current 267,457 316,481  
Total Loans 271,552 319,363  
Non-PCI Loans [Member] | Real estate loans [Member] | Other [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 1,862 3,441  
Current 1,086,825 969,802  
Total Loans 1,088,687 973,243  
Non-PCI Loans [Member] | Real estate loans [Member] | Construction [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Current 67,439 23,387  
Total Loans 67,439 23,387  
Non-PCI Loans [Member] | Real estate loans [Member] | Residential property [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 101 396  
Current 329,594 234,483  
Total Loans 329,695 234,879  
Non-PCI Loans [Member] | Commercial and industrial loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 319,521 312,705  
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial term [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 881 1,131  
Current 143,873 151,471  
Total Loans 144,754 152,602  
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | Commercial lines of credit [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 184 450  
Current 145,554 127,774  
Total Loans 145,738 128,224  
Non-PCI Loans [Member] | Commercial and industrial loans [Member] | International loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 497  
Current 29,029 31,382  
Total Loans 29,029 31,879  
Non-PCI Loans [Member] | Consumer loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 182 255  
Current 22,084 24,624  
Total Loans 22,266 24,879  
Non-PCI Loans [Member] | 30-59 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 1,671 4,522  
Non-PCI Loans [Member] | 30-59 Days Past Due | Real estate loans [Member] | Retail [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 300 441  
Non-PCI Loans [Member] | 30-59 Days Past Due | Real estate loans [Member] | Hospitality [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 489 1,250  
Non-PCI Loans [Member] | 30-59 Days Past Due | Real estate loans [Member] | Gas station [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 959  
Non-PCI Loans [Member] | 30-59 Days Past Due | Real estate loans [Member] | Other [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable (1) 1,144  
Non-PCI Loans [Member] | 30-59 Days Past Due | Real estate loans [Member] | Construction [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 30-59 Days Past Due | Real estate loans [Member] | Residential property [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 30-59 Days Past Due | Commercial and industrial loans [Member] | Commercial term [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 617 420  
Non-PCI Loans [Member] | 30-59 Days Past Due | Commercial and industrial loans [Member] | Commercial lines of credit [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 176 58  
Non-PCI Loans [Member] | 30-59 Days Past Due | Consumer loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 90 250  
Non-PCI Loans [Member] | 60-89 Days Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 1,446 2,214  
Non-PCI Loans [Member] | 60-89 Days Past Due | Real estate loans [Member] | Retail [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 343  
Non-PCI Loans [Member] | 60-89 Days Past Due | Real estate loans [Member] | Hospitality [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 47 49  
Non-PCI Loans [Member] | 60-89 Days Past Due | Real estate loans [Member] | Gas station [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 662 406  
Non-PCI Loans [Member] | 60-89 Days Past Due | Real estate loans [Member] | Other [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 627 661  
Non-PCI Loans [Member] | 60-89 Days Past Due | Real estate loans [Member] | Construction [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 60-89 Days Past Due | Real estate loans [Member] | Residential property [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 60-89 Days Past Due | Commercial and industrial loans [Member] | Commercial term [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 18 253  
Non-PCI Loans [Member] | 60-89 Days Past Due | Commercial and industrial loans [Member] | Commercial lines of credit [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 60-89 Days Past Due | Commercial and industrial loans [Member] | International loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 497  
Non-PCI Loans [Member] | 60-89 Days Past Due | Consumer loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 92 5  
Non-PCI Loans [Member] | 90 Days or More Past Due      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 6,854 8,638  
Non-PCI Loans [Member] | 90 Days or More Past Due | Real estate loans [Member] | Retail [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 223 399  
Non-PCI Loans [Member] | 90 Days or More Past Due | Real estate loans [Member] | Hospitality [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 1,607 3,840  
Non-PCI Loans [Member] | 90 Days or More Past Due | Real estate loans [Member] | Gas station [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 3,433 1,517  
Non-PCI Loans [Member] | 90 Days or More Past Due | Real estate loans [Member] | Other [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 1,236 1,636  
Non-PCI Loans [Member] | 90 Days or More Past Due | Real estate loans [Member] | Construction [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 90 Days or More Past Due | Real estate loans [Member] | Residential property [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 101 396  
Non-PCI Loans [Member] | 90 Days or More Past Due | Commercial and industrial loans [Member] | Commercial term [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 246 458  
Non-PCI Loans [Member] | 90 Days or More Past Due | Commercial and industrial loans [Member] | Commercial lines of credit [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 8 392  
Non-PCI Loans [Member] | 90 Days or More Past Due | Commercial and industrial loans [Member] | International loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable 0 0  
Non-PCI Loans [Member] | 90 Days or More Past Due | Consumer loans [Member]      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Past due loans receivable $ 0 $ 0