Quarterly report pursuant to Section 13 or 15(d)

Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail)

v3.3.0.814
Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
SecurityLoan
Sep. 30, 2014
USD ($)
SecurityLoan
Sep. 30, 2015
USD ($)
SecurityLoan
Sep. 30, 2014
USD ($)
SecurityLoan
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 7 3 14 14
Pre-Modification Outstanding Recorded Investment $ 2,062 $ 4,501 $ 3,281 $ 8,474
Post-Modification Outstanding Recorded Investment $ 2,036 $ 4,576 $ 3,061 $ 8,370
Real estate loans [Member] | Retail [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 1 0 1 1
Pre-Modification Outstanding Recorded Investment $ 1,230 $ 0 $ 1,248 $ 2,002
Post-Modification Outstanding Recorded Investment 1,228 $ 0 1,228 1,856
Loan modifications made through reduction of principal or accrued interest payments $ 1,200   $ 1,200  
Amount of loan modification through extension of maturity       $ 1,900
Real estate loans [Member] | Hospitality [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1    
Pre-Modification Outstanding Recorded Investment $ 0 $ 2,014    
Post-Modification Outstanding Recorded Investment $ 0 1,991    
Loan modification made through deferrals principal payment   $ 2,000    
Real estate loans [Member] | Gas station [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 1
Pre-Modification Outstanding Recorded Investment $ 0 $ 395 $ 0 $ 2,040
Post-Modification Outstanding Recorded Investment $ 0 385 $ 0 1,991
Loan modification made through deferrals principal payment   $ 385   $ 2,000
Real estate loans [Member] | Other [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 1 0 2 3
Pre-Modification Outstanding Recorded Investment $ 412 $ 0 $ 731 $ 1,422
Post-Modification Outstanding Recorded Investment 412 $ 0 725 1,386
Loan modification made through deferrals principal payment $ 412   $ 725 1,300
Amount of loan modification through extension of maturity       $ 59
Real estate loans [Member] | Residential property [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan     0 1
Pre-Modification Outstanding Recorded Investment     $ 0 $ 317
Post-Modification Outstanding Recorded Investment     $ 0 311
Amount of loan modification through extension of maturity       $ 311
Commercial and industrial loans [Member] | Commercial term [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 5 0 10 5
Pre-Modification Outstanding Recorded Investment $ 420 $ 0 $ 1,052 $ 327
Post-Modification Outstanding Recorded Investment 396 $ 0 858 263
Loan modifications made through reduction of principal or accrued interest payments 31   71 51
Loan modification made through deferrals principal payment 71   38 39
Amount of loan modification through extension of maturity $ 293   $ 749 $ 173
Commercial and industrial loans [Member] | Commercial lines of credit [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 3
Pre-Modification Outstanding Recorded Investment $ 0 $ 2,092 $ 0 $ 2,366
Post-Modification Outstanding Recorded Investment $ 0 2,200 $ 0 2,563
Loan modifications made through reduction of principal or accrued interest payments       134
Loan modification made through deferrals principal payment   $ 2,200   $ 2,400
Consumer loans [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan     1 0
Pre-Modification Outstanding Recorded Investment     $ 250 $ 0
Post-Modification Outstanding Recorded Investment     $ 250 $ 0