v2.4.0.6
Loans by Class Modified as Troubled Debt Restructurings (Detail) (USD $)
Jun. 30, 2012
Contract
Dec. 30, 2011
Financing Receivable, Modifications [Line Items]  
Number of Loans22 
Pre-Modification Outstanding Recorded Investment$ 21,941,230 
Post-Modification Outstanding Recorded Investment20,737,40615,229,000
Commercial
  
Financing Receivable, Modifications [Line Items]  
Number of Loans3 
Pre-Modification Outstanding Recorded Investment508,281 
Post-Modification Outstanding Recorded Investment467,796 
Residential real estate | Home Equity Line of Credit
  
Financing Receivable, Modifications [Line Items]  
Number of Loans0 
Pre-Modification Outstanding Recorded Investment0 
Post-Modification Outstanding Recorded Investment0 
Residential real estate | Residential Real Estate Other Financing Receivable
  
Financing Receivable, Modifications [Line Items]  
Number of Loans6 
Pre-Modification Outstanding Recorded Investment4,170,926 
Post-Modification Outstanding Recorded Investment4,049,039 
Nonresidential real estate | Commercial Mortgage Loans, Owner Occupied
  
Financing Receivable, Modifications [Line Items]  
Number of Loans3 
Pre-Modification Outstanding Recorded Investment8,137,536 
Post-Modification Outstanding Recorded Investment7,857,519 
Nonresidential real estate | Commercial Mortgage Loans, Non Owner Occupied
  
Financing Receivable, Modifications [Line Items]  
Number of Loans4 
Pre-Modification Outstanding Recorded Investment3,661,111 
Post-Modification Outstanding Recorded Investment3,152,428 
Construction
  
Financing Receivable, Modifications [Line Items]  
Number of Loans6 
Pre-Modification Outstanding Recorded Investment5,463,376 
Post-Modification Outstanding Recorded Investment5,210,624 
Consumer | Consumer Credit Card Financing Receivable
  
Financing Receivable, Modifications [Line Items]  
Number of Loans0 
Pre-Modification Outstanding Recorded Investment0 
Post-Modification Outstanding Recorded Investment0 
Consumer | Consumer Other Financing Receivable
  
Financing Receivable, Modifications [Line Items]  
Number of Loans0 
Pre-Modification Outstanding Recorded Investment0 
Post-Modification Outstanding Recorded Investment0 
Municipal Obligations
  
Financing Receivable, Modifications [Line Items]  
Number of Loans0 
Pre-Modification Outstanding Recorded Investment0 
Post-Modification Outstanding Recorded Investment$ 0