Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Details Textual)

v2.4.0.6
Intangible Assets (Details Textual) (USD $)
12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Minimum [Member]
Dec. 31, 2012
Maximum [Member]
May 20, 2011
Harrisonburg branch acquisition [Member]
Dec. 31, 2012
Core Deposits [Member]
Dec. 31, 2011
Core Deposits [Member]
Dec. 31, 2010
Core Deposits [Member]
Feb. 28, 2010
Core Deposits [Member]
First Market Bank Acquisition [Member]
Dec. 31, 2012
Trademarks [Member]
Dec. 31, 2011
Trademarks [Member]
Dec. 31, 2010
Trademarks [Member]
Feb. 28, 2010
Trademarks [Member]
First Market Bank Acquisition [Member]
Intangible Assets (Textual) [Abstract]                            
Intangibles Assets           $ 9,500                
Amortization period       4 years 14 years         4 years 3 months 18 days       3 years
Amortization expense 5,764,000 14,050,000 13,563,000       4,900,000 6,100,000 7,300,000   400,000 400,000 367,000  
Intangible acquired                   $ 26,400,000       $ 1,200,000