Quarterly report pursuant to Section 13 or 15(d)

Analysis Of Troubled Debt Restructuring (Detail)

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Analysis Of Troubled Debt Restructuring (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Financing Receivable, Modifications [Line Items]    
Number of Contracts $ 29 $ 7
Pre- Modification Outstanding Recorded Investment 12,035 4,522
Post- Modification Outstanding Recorded Investment 12,035 4,522
Number of Contracts 3 0
Recorded Investment 2,786 0
Commercial Financial And Agricultural Financing Receivable [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 2 5
Pre- Modification Outstanding Recorded Investment 1,216 1,831
Post- Modification Outstanding Recorded Investment 1,216 1,831
Number of Contracts 0 0
Recorded Investment 0 0
Commercial Real Estate Construction Financing Receivable [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 15 0
Pre- Modification Outstanding Recorded Investment 2,899 0
Post- Modification Outstanding Recorded Investment 2,899 0
Number of Contracts 0 0
Recorded Investment 0 0
Commercial Mortgage Loans Owner Occupied [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 6 1
Pre- Modification Outstanding Recorded Investment 5,907 2,357
Post- Modification Outstanding Recorded Investment 5,907 2,357
Number of Contracts 3 0
Recorded Investment 2,786 0
One To Four Family Mortgage Loans [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 5 0
Pre- Modification Outstanding Recorded Investment 1,709 0
Post- Modification Outstanding Recorded Investment 1,709 0
Number of Contracts 0 0
Recorded Investment 0 0
Other Real Estate Mortgage Loans [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 1 1
Pre- Modification Outstanding Recorded Investment 304 334
Post- Modification Outstanding Recorded Investment 304 334
Number of Contracts 0 0
Recorded Investment 0 0
Residential Real Estate Mortgage Loans [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 12 2
Pre- Modification Outstanding Recorded Investment 7,920 2,691
Post- Modification Outstanding Recorded Investment 7,920 2,691
Number of Contracts 3 0
Recorded Investment 2,786 0
Consumer Portfolio Segment [Member]
   
Financing Receivable, Modifications [Line Items]    
Number of Contracts 0 0
Pre- Modification Outstanding Recorded Investment 0 0
Post- Modification Outstanding Recorded Investment 0 0
Number of Contracts 0 0
Recorded Investment $ 0 $ 0