Annual report pursuant to Section 13 and 15(d)

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

v2.4.0.6
Loans - Troubled Debt Restructuring, Disaggregated by Loan Class (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
SecurityLoan
Dec. 31, 2011
SecurityLoan
Financing Receivable, Modifications [Line Items]    
Number of Loans 59 98
Pre-Modification Outstanding Recorded Investment $ 16,320 $ 45,114
Post-Modification Outstanding Recorded Investment 15,046 42,115
Real Estate Loans [Member] | Retail [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans 2 2
Pre-Modification Outstanding Recorded Investment 562 1,260
Post-Modification Outstanding Recorded Investment 533 1,260
Real Estate Loans [Member] | Other [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans 1 2
Pre-Modification Outstanding Recorded Investment 547 2,387
Post-Modification Outstanding Recorded Investment 527 2,381
Real Estate Loans [Member] | Residential Property [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans    3
Pre-Modification Outstanding Recorded Investment    2,740
Post-Modification Outstanding Recorded Investment    2,739
Commercial and Industrial Loans [Member] | Unsecured [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans 37 50
Pre-Modification Outstanding Recorded Investment 6,024 15,410
Post-Modification Outstanding Recorded Investment 5,277 14,797
Commercial and Industrial Loans [Member] | Secured By Real Estate [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans 7 12
Pre-Modification Outstanding Recorded Investment 7,963 15,363
Post-Modification Outstanding Recorded Investment 7,570 14,268
Commercial and Industrial Loans [Member] | Commercial Lines of Credit [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans 1   
Pre-Modification Outstanding Recorded Investment 202   
Post-Modification Outstanding Recorded Investment 188   
Commercial and Industrial Loans [Member] | SBA Loans [Member]
    
Financing Receivable, Modifications [Line Items]    
Number of Loans 11 29
Pre-Modification Outstanding Recorded Investment 1,022 7,954
Post-Modification Outstanding Recorded Investment $ 951 $ 6,670