Annual report pursuant to Section 13 and 15(d)

Premises and Equipment - Summary of Major Components of Premises and Equipment (Detail)

v2.4.0.6
Premises and Equipment - Summary of Major Components of Premises and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]    
Premises and Equipment, Gross $ 41,538 $ 42,707
Accumulated Depreciation and Amortization (26,388) (26,104)
Total Premises and Equipment, Net 15,150 16,603
Land [Member]
    
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]    
Premises and Equipment, Gross 6,120 6,120
Building and Improvements [Member]
    
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]    
Premises and Equipment, Gross 9,197 9,198
Furniture and Equipment [Member]
    
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]    
Premises and Equipment, Gross 15,039 15,229
Leasehold Improvements [Member]
    
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]    
Premises and Equipment, Gross 10,320 11,298
Software [Member]
    
Interest Cost Capitalized And Depreciation And Amortization Expenses For Property, Plant and Equipment [Line Items]    
Premises and Equipment, Gross $ 862 $ 862