v2.4.0.6
Loans by Class Modified as Troubled Debt Restructurings for which there was Payment Default within Twelve Months following Modification (Detail) (USD $)
Sep. 30, 2012
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 12
Recorded Investment $ 5,518,725
Commercial [Member]
 
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 1
Recorded Investment 154,357
Residential Real Estate [Member] | Residential Real Estate Other Financing Receivable [Member]
 
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 1
Recorded Investment 465,293
Residential Real Estate [Member] | Multi Family [Member]
 
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 1
Recorded Investment 48,238
Nonresidential Real Estate [Member] | Commercial Mortgage Loans, Non Owner Occupied [Member]
 
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 3
Recorded Investment 3,234,737
Construction [Member]
 
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 2
Recorded Investment 1,616,100
Municipal Obligations [Member]
 
Troubled Debt Restructuring, Debtor, Subsequent Periods [Line Items]  
Number of Loans 0
Recorded Investment $ 0