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Other Intangible Assets (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Other Intangible Assets      
Gross amount $ 3,247,242 $ 1,398,242  
Accumulated amortization (1,163,301) (999,743)  
Net balance 2,083,941 398,499  
Amortization expense related to intangible assets 163,558 195,330 223,908
Future amortization      
2013 529,604    
2014 444,937    
2015 369,800    
2016 369,800    
2017 369,800    
Total 2,083,941    
Patents
      
Other Intangible Assets      
Estimated useful life 14 years    
Gross amount 428,806 428,806  
Accumulated amortization (428,806) (425,052)  
Net balance   3,754  
Non-compete
      
Other Intangible Assets      
Estimated useful life 5 years    
Gross amount 512,000 200,000  
Accumulated amortization (156,500) (126,500)  
Net balance 355,500 73,500  
Customer list
      
Other Intangible Assets      
Estimated useful life 5 years    
Gross amount 2,306,436 769,436  
Accumulated amortization (577,995) (448,191)  
Net balance $ 1,728,441 $ 321,245