XML 36 R62.htm IDEA: XBRL DOCUMENT v3.3.0.814
Non-performing Loans and Impaired Loans - Additional Information (Detail)
 9 Months Ended
Sep. 30, 2015
USD ($)
ConsecutivePayment
Contract
Dec. 31, 2014
USD ($)
Financing Receivable, Modifications [Line Items]    
Non-accrual loans $ 13,956,000 $ 15,312,000
Non-performing TDRs 4,000,000  
Loans acquired included in non-accrual loans 1,900,000  
Loans acquired included in non-performing TDRs $ 98,000  
Loan delinquency period 90 days  
Minimum period required for satisfactory performance to return loan from non-accrual to accrual status 6 months  
Restructured loans with modified recorded balances $ 0  
Restructured loan returned to accruing status number of Consecutive Payments of loan | ConsecutivePayment 9  
Restructured loan reported in TDRs $ 6,900,000  
Specific reserves allocated to troubled debt restructuring $ 631,000  
Number TDRs returned to accrual status | Contract 4  
Loans classified as TDR after a period 90 days  
Performing Financing Receivable [Member]    
Financing Receivable, Modifications [Line Items]    
Restructured loan $ 2,900,000  
Good Pass [Member]    
Financing Receivable, Modifications [Line Items]    
Number of consecutive years of profit Unaudited Financial Information for Good Pass Rating 5 years  
Number of years of Satisfactory Relationship with bank for Good Pass Rating 5 years  
Minimum [Member]    
Financing Receivable, Modifications [Line Items]    
Loan delinquency period 90 days  
Delay or shortfall in payments of loan 30 days  
Loans with an aggregate credit exposure $ 1,000,000  
Minimum [Member] | Good Pass [Member]    
Financing Receivable, Modifications [Line Items]    
Number of consecutive years of profit for Good Pass Rating 3 years  
Minimum [Member] | Satisfactory Pass [Member]    
Financing Receivable, Modifications [Line Items]    
Minimum number of years of Satisfactory Repayment required for Satisfactory Pass Rating 2 years  
Maximum [Member]    
Financing Receivable, Modifications [Line Items]    
Loans with an aggregate credit exposure $ 2,500,000