Quarterly report pursuant to Section 13 or 15(d)

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

v3.2.0.727
Loans - Troubled Debt Restructurings, Disaggregated by Loan Class (Detail)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
SecurityLoan
Jun. 30, 2014
USD ($)
SecurityLoan
Jun. 30, 2015
USD ($)
SecurityLoan
Jun. 30, 2014
USD ($)
SecurityLoan
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 3 6 7 11
Pre-Modification Outstanding Recorded Investment $ 572 $ 2,588 $ 1,116 $ 4,057
Post-Modification Outstanding Recorded Investment $ 572 $ 2,450 $ 1,049 $ 3,865
Real estate loans [Member] | Retail [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 1
Pre-Modification Outstanding Recorded Investment $ 0 $ 2,002 $ 0 $ 2,002
Post-Modification Outstanding Recorded Investment $ 0 1,882 $ 0 1,882
Amount of loan modification through extension of maturity   $ 1,900   $ 1,900
Real estate loans [Member] | Other [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 1 1 1 2
Pre-Modification Outstanding Recorded Investment $ 313 $ 65 $ 313 $ 1,011
Post-Modification Outstanding Recorded Investment 313 62 313 1,005
Amount of loan modification through extension of maturity   $ 62   62
Loan modification made through deferrals principal payment $ 313   $ 313 $ 943
Real estate loans [Member] | Residential property [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 1
Pre-Modification Outstanding Recorded Investment $ 0 $ 316 $ 0 $ 317
Post-Modification Outstanding Recorded Investment $ 0 313 $ 0 313
Amount of loan modification through extension of maturity   $ 313   $ 313
Commercial and industrial loans [Member] | Commercial term [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 1 2 5 5
Pre-Modification Outstanding Recorded Investment $ 9 $ 59 $ 553 $ 327
Post-Modification Outstanding Recorded Investment 9 53 486 287
Amount of loan modification through extension of maturity     476  
Loan modifications made through reduction of principal or accrued interest payments $ 9 12 $ 9 140
Loan modification made through deferrals principal payment   $ 41   $ 238
Commercial and industrial loans [Member] | Commercial lines of credit [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 0 1 0 2
Pre-Modification Outstanding Recorded Investment $ 0 $ 146 $ 0 $ 400
Post-Modification Outstanding Recorded Investment $ 0 140 $ 0 378
Loan modifications made through reduction of principal or accrued interest payments   $ 140   140
Loan modification made through deferrals principal payment       $ 238
Consumer loans [Member]        
Financing Receivable, Modifications [Line Items]        
Number of Loans | SecurityLoan 1 0 1 0
Pre-Modification Outstanding Recorded Investment $ 250 $ 0 $ 250 $ 0
Post-Modification Outstanding Recorded Investment 250 $ 0 250 $ 0
Loan modification made through deferrals principal payment $ 250   $ 250