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Shareholders' Equity (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Amount recognized in Statements of Operations-    
Stock-based compensation expense $ 533,000 $ 342,000
Cost of sales
    
Amount recognized in Statements of Operations-    
Stock-based compensation expense 22,000 93,000
Selling
    
Amount recognized in Statements of Operations-    
Stock-based compensation expense 176,000 104,000
Marketing
    
Amount recognized in Statements of Operations-    
Stock-based compensation expense 16,000 18,000
General and administrative
    
Amount recognized in Statements of Operations-    
Stock-based compensation expense $ 319,000 $ 127,000