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Intangible Assets (Details Textual) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Amortization of intangible assets $ 147,000 $ 26,000 $ 433,000 $ 80,000
Future Amortization Expense, Year One 581,000   581,000  
Future Amortization Expense, Year Two 535,000   535,000  
Future Amortization Expense, Year Three 482,000   482,000  
Future Amortization Expense, Year Four 404,000   404,000  
Future Amortization Expense, after Year Five 404,000   404,000  
Customer Lists [Member]
        
Finite-lived Intangible Assets Acquired     3,183,000  
Customer Lists [Member] | Maximum [Member]
        
Finite-Lived Intangible Asset, Useful Life     10 years  
Customer Lists [Member] | Minimum [Member]
        
Finite-Lived Intangible Asset, Useful Life     7 years  
Noncompete Agreements [Member]
        
Finite-lived Intangible Assets Acquired     261,000  
Finite-Lived Intangible Asset, Useful Life     5 years  
Software [Member]
        
Finite-lived Intangible Assets Acquired     $ 234,000  
Finite-Lived Intangible Asset, Useful Life     3 years  
Other Intangible Assets [Member]
        
Finite-Lived Intangible Asset, Useful Life     15 years