Quarterly report pursuant to Section 13 or 15(d)

Loans - Non-Accrual Loans, Disaggregated by Loan Class (Detail)

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Loans - Non-Accrual Loans, Disaggregated by Loan Class (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans $ 12,341 $ 19,118
Real estate loans [Member] | Retail [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 832 946
Real estate loans [Member] | Hospitality [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 1,956 5,790
Real estate loans [Member] | Gas station [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 4,540 2,774
Real estate loans [Member] | Other [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 3,366 4,068
Real estate loans [Member] | Residential property [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 252 1,386
Commercial and industrial loans [Member] | Commercial term [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 966 2,193
Commercial and industrial loans [Member] | Commercial lines of credit [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans 23 450
Consumer loans [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total non-accrual Non-PCI loans $ 406 $ 1,511