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Description of Business and Significant Accounting Policies (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Concentration Risk [Line Items]      
Negative Cash Book Balance $ 5,261,000 $ 0  
Equity Method Investment, Ownership Percentage 5.00%    
Accounts Receivable, Net, Current 94,662,000 83,597,000  
Capitalized setup costs 1,178,000 0  
Single Automotive Customer [Member]
     
Concentration Risk [Line Items]      
Maximum Concentration Risk Percentage 10.00%    
Accounts Receivable, Net, Current $ 7,106,000 $ 8,986,000  
Single Automotive Customer [Member] | Accounts Receivable [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Percentage 8.00% 11.00%  
United States Government [Member]
     
Concentration Risk [Line Items]      
Segment Concentration Risk Percentage 10.00% 12.00% 14.00%
Automotive Industry [Member]
     
Concentration Risk [Line Items]      
Segment Concentration Risk Percentage 16.00% 17.00% 17.00%
Financial And Insurance industry [Member] | Sales Revenue, Net [Member]
     
Concentration Risk [Line Items]      
Concentration Risk, Percentage 11.00%