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Geographic Segment Data (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Segment Reporting Information [Line Items]          
Net Sales to Outside Customers $ 14,880,820 $ 14,569,309 $ 43,476,981 $ 42,648,515  
Total Assets 40,556,458   40,556,458   $ 43,046,910
United States [Member]          
Segment Reporting Information [Line Items]          
Net Sales to Outside Customers 11,377,000 10,808,000 33,904,000 30,986,000  
Total Assets 29,874,000   29,874,000   33,026,000
Europe [Member]          
Segment Reporting Information [Line Items]          
Net Sales to Outside Customers 374,000 380,000 1,031,000 1,182,000  
Total Assets 1,398,000   1,398,000   1,457,000
Mexico [Member]          
Segment Reporting Information [Line Items]          
Net Sales to Outside Customers 2,606,000 2,789,000 6,867,000 8,424,000  
Total Assets 7,755,000   7,755,000   7,516,000
United Kingdom [Member]          
Segment Reporting Information [Line Items]          
Net Sales to Outside Customers 524,000 $ 592,000 1,675,000 $ 2,057,000  
Total Assets $ 1,529,000   $ 1,529,000   $ 1,048,000