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Other Intangible Assets (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Other Intangible Assets          
Gross amount $ 2,987,000   $ 2,987,000   $ 2,987,000
Accumulated amortization (1,873,000)   (1,873,000)   (1,641,000)
Net balance 1,114,000   1,114,000   1,346,000
Amortization expense related to intangible assets 113,000 105,000 232,000 239,000  
Future amortization          
2014 160,000   160,000    
2015 318,000   318,000    
2016 318,000   318,000    
2017 318,000   318,000    
Total 1,114,000   1,114,000    
Patents [Member]
          
Other Intangible Assets          
Estimated useful life     14 years    
Gross amount 429,000   429,000   429,000
Accumulated amortization (429,000)   (429,000)   (429,000)
Noncompete Agreements [Member]
          
Other Intangible Assets          
Estimated useful life     5 years    
Gross amount 512,000   512,000   512,000
Accumulated amortization (294,000)   (294,000)   (249,000)
Net balance 218,000   218,000   263,000
Customer Lists [Member]
          
Other Intangible Assets          
Estimated useful life     5 years    
Gross amount 2,046,000   2,046,000   2,046,000
Accumulated amortization (1,150,000)   (1,150,000)   (963,000)
Net balance $ 896,000   $ 896,000   $ 1,083,000