Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
SecurityLoan
Jun. 30, 2015
USD ($)
SecurityLoan
Jun. 30, 2016
USD ($)
SecurityLoan
Jun. 30, 2015
USD ($)
SecurityLoan
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 2 3 5 7
Pre-Modification Outstanding Recorded Investment $ 21 $ 572 $ 256 $ 1,116
Post-Modification Outstanding Recorded Investment $ 9 $ 572 $ 237 $ 1,049
Real estate loans [Member] | Retail [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan     1 0
Pre-Modification Outstanding Recorded Investment     $ 21 $ 0
Post-Modification Outstanding Recorded Investment     23 $ 0
Loan modifications made through reduction of principal or accrued interest payments     $ 23  
Real estate loans [Member] | Other [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 1
Pre-Modification Outstanding Recorded Investment $ 0 $ 313 $ 0 $ 313
Post-Modification Outstanding Recorded Investment $ 0 313 $ 0 313
Loan modification made through deferrals principal payment   $ 313   $ 313
Commercial and industrial loans [Member] | Commercial term [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 2 1 4 5
Pre-Modification Outstanding Recorded Investment $ 21 $ 9 $ 235 $ 553
Post-Modification Outstanding Recorded Investment 9 9 214 486
Loan modification made through deferrals principal payment 6   156  
Amount of loan modification through extension of maturity $ 3   55 476
Loan modifications made through reduction of principal or accrued interest payments   $ 9 $ 3 $ 9
Consumer loans [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 1
Pre-Modification Outstanding Recorded Investment $ 0 $ 250 $ 0 $ 250
Post-Modification Outstanding Recorded Investment $ 0 250 $ 0 250
Loan modification made through deferrals principal payment   $ 250   $ 250