Premises and Equipment - Schedule of Premises and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Land [Member]
Dec. 31, 2012
Land [Member]
Dec. 31, 2013
Land [Member]
Minimum [Member]
Dec. 31, 2013
Land [Member]
Maximum [Member]
Dec. 31, 2013
Bank Premises [Member]
Dec. 31, 2012
Bank Premises [Member]
Dec. 31, 2013
Bank Premises [Member]
Minimum [Member]
Dec. 31, 2013
Bank Premises [Member]
Maximum [Member]
Dec. 31, 2013
Leasehold Improvements [Member]
Dec. 31, 2012
Leasehold Improvements [Member]
Dec. 31, 2013
Leasehold Improvements [Member]
Minimum [Member]
Dec. 31, 2013
Leasehold Improvements [Member]
Maximum [Member]
Dec. 31, 2013
Furnishings and Equipment [Member]
Dec. 31, 2012
Furnishings and Equipment [Member]
Dec. 31, 2013
Furnishings and Equipment [Member]
Minimum [Member]
Dec. 31, 2013
Furnishings and Equipment [Member]
Maximum [Member]
Dec. 31, 2013
Construction in Progress [Member]
Dec. 31, 2012
Construction in Progress [Member]
Dec. 31, 2013
Construction in Progress [Member]
Minimum [Member]
Dec. 31, 2013
Construction in Progress [Member]
Maximum [Member]
Property, Plant and Equipment [Line Items]                                            
Premises and equipment, Estimated useful life                   7 years 50 years     10 years 30 years     3 years 10 years          
Premises and equipment, Gross $ 14,408 $ 10,502 $ 1,410 $ 741     $ 8,876 $ 4,618     $ 131 $ 2,531     $ 3,898 $ 2,602     $ 93 $ 10    
Accumulated depreciation (6,056) (3,340)                                        
Premises and equipment, Net $ 8,352 $ 7,162