Quarterly report pursuant to Section 13 or 15(d)

Loans - Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type (Detail)

v2.4.0.6
Loans - Troubled Debt Restructurings, Disaggregated by Type of Concession and by Loan Type (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Deferral of Principal $ 6,610 $ 6,648
Non-Accrual TDRs Deferral of Principal and Interest 2,898 3,288
Non-Accrual TDRs Reduction of Principal or Interest 5,296 6,096
Non-Accrual TDRs Extension of Maturity 2,186 2,737
Non-Accrual TDRs 16,990 18,769
Accrual TDRs Deferral of Principal 4,390 6,788
Accrual TDRs Deferral of Principal and Interest   572
Accrual TDRs Reduction of Principal or Interest 2,816 1,638
Accrual TDRs Extension of Maturity 7,478 7,982
Accrual TDRs 14,684 16,980
Real Estate Loans [Member] | Retail [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Extension of Maturity 950 1,080
Non-Accrual TDRs 950 1,080
Accrual TDRs Deferral of Principal 350 357
Accrual TDRs Deferral of Principal and Interest     
Accrual TDRs Reduction of Principal or Interest     
Accrual TDRs Extension of Maturity 175 175
Accrual TDRs 525 532
Real Estate Loans [Member] | Other [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Extension of Maturity     
Non-Accrual TDRs     
Accrual TDRs Deferral of Principal 526 527
Accrual TDRs Deferral of Principal and Interest     
Accrual TDRs Reduction of Principal or Interest     
Accrual TDRs Extension of Maturity     
Accrual TDRs 526 527
Real Estate Loans [Member] | Residential Property [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Deferral of Principal 819 827
Non-Accrual TDRs Extension of Maturity     
Non-Accrual TDRs 819 827
Accrual TDRs Deferral of Principal     
Accrual TDRs Deferral of Principal and Interest   572
Accrual TDRs Reduction of Principal or Interest     
Accrual TDRs Extension of Maturity     
Accrual TDRs   572
Commercial and Industrial Loans [Member] | Unsecured [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Deferral of Principal and Interest 576 658
Non-Accrual TDRs Reduction of Principal or Interest 4,029 4,558
Non-Accrual TDRs Extension of Maturity 998 1,413
Non-Accrual TDRs 5,603 6,629
Accrual TDRs Deferral of Principal 922 976
Accrual TDRs Deferral of Principal and Interest     
Accrual TDRs Reduction of Principal or Interest 794 1,090
Accrual TDRs Extension of Maturity 2,776 3,260
Accrual TDRs 4,492 5,326
Commercial and Industrial Loans [Member] | Secured By Real Estate [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Deferral of Principal 2,263 2,317
Non-Accrual TDRs Deferral of Principal and Interest 1,085 1,343
Non-Accrual TDRs Reduction of Principal or Interest 298 318
Non-Accrual TDRs Extension of Maturity     
Non-Accrual TDRs 3,646 3,978
Accrual TDRs Deferral of Principal 2,139 4,444
Accrual TDRs Deferral of Principal and Interest     
Accrual TDRs Reduction of Principal or Interest 512 448
Accrual TDRs Extension of Maturity 4,527 4,547
Accrual TDRs 7,178 9,439
Commercial and Industrial Loans [Member] | Commercial Lines of Credit [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Deferral of Principal 663 673
Non-Accrual TDRs Reduction of Principal or Interest 188 188
Non-Accrual TDRs Extension of Maturity 238 244
Non-Accrual TDRs 1,089 1,105
Accrual TDRs Deferral of Principal     
Accrual TDRs Deferral of Principal and Interest     
Accrual TDRs Reduction of Principal or Interest     
Accrual TDRs Extension of Maturity     
Accrual TDRs     
Commercial and Industrial Loans [Member] | SBA Loans [Member]
   
Financing Receivable, Modifications [Line Items]    
Non-Accrual TDRs Deferral of Principal 2,865 2,831
Non-Accrual TDRs Deferral of Principal and Interest 1,237 1,287
Non-Accrual TDRs Reduction of Principal or Interest 781 1,032
Non-Accrual TDRs Extension of Maturity     
Non-Accrual TDRs 4,883 5,150
Accrual TDRs Deferral of Principal 453 484
Accrual TDRs Deferral of Principal and Interest     
Accrual TDRs Reduction of Principal or Interest 80 100
Accrual TDRs Extension of Maturity     
Accrual TDRs 533 584
Commercial and Industrial Loans [Member] | International Loans [Member]
   
Financing Receivable, Modifications [Line Items]    
Accrual TDRs Reduction of Principal or Interest 1,430  
Accrual TDRs $ 1,430