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Geographic Segment Data (Details) - USD ($)
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Segment Reporting Information [Line Items]      
Net Sales to Outside Customers $ 15,204,994 $ 14,975,329  
Total Assets 41,718,100   $ 41,804,969
United States [Member]      
Segment Reporting Information [Line Items]      
Net Sales to Outside Customers 12,087,000 11,717,000  
Total Assets 30,747,000   30,772,000
United Kingdom [Member]      
Segment Reporting Information [Line Items]      
Net Sales to Outside Customers 708,000 649,000  
Total Assets 1,931,000   1,791,000
Europe [Member]      
Segment Reporting Information [Line Items]      
Net Sales to Outside Customers 547,000 436,000  
Total Assets 1,773,000   1,562,000
Mexico [Member]      
Segment Reporting Information [Line Items]      
Net Sales to Outside Customers 1,863,000 $ 2,173,000  
Total Assets $ 7,267,000   $ 7,680,000