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Summary of Significant Accounting Policies (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Interest Costs Capitalized $ 24,000 $ 25,000
Research and Development Expense 516,000 728,000
Advertising Expense $ 44,000 $ 63,000
Building [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 25 years  
Building [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 30 years  
Machinery and Equipment [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 3 years  
Machinery and Equipment [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 15 years  
Project Life [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 3 years  
Project Life [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 5 years  
Light Machinery [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 5 years  
Light Machinery [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 10 years  
Heavy Machinery [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 10 years  
Heavy Machinery [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 15 years  
Other Furniture and Equipment [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 5 years  
Other Furniture and Equipment [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 8 years  
Leasehold Improvements [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 5 years  
Leasehold Improvements [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 8 years  
Furniture and Equipment At Customer Locations [Member] | Minimum [Member]
   
Property, Plant and Equipment, Useful Life 1 year  
Furniture and Equipment At Customer Locations [Member] | Maximum [Member]
   
Property, Plant and Equipment, Useful Life 3 years