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Summary of Significant Accounting Policies (Details Textual) (USD $)
 12 Months Ended 7 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
United States Army Program Office, Saudi Arabian National Guard
Dec. 31, 2012
United States Army Program Office, Saudi Arabian National Guard
Defense Products
Dec. 31, 2012
United States Army Program Office, Saudi Arabian National Guard
Sevices
Accounting Policies [Line Items]            
Contract amount       $ 35,600 $ 21,200 $ 14,400
Contracts revenue       0    
Concentration of Credit Risk and Single Source Suppliers            
Marketable securities 29,306,444 23,553,203        
Research and Development            
Customer-funded product sales 0 0 4,478,000      
Customer-funded service sales 5,470,000 1,061,000 1,062,000      
Customer-funded costs included in costs of service sales 3,424,000 412,000 953,000      
Customer-funded costs included in costs of product sales 0 0 1,001,000      
Advertising Costs            
Advertising expense 2,523,000 2,081,000 2,171,000      
Foreign Currency Translation            
Foreign currency transaction gain (loss), before tax $ 37,000 $ 79,000 $ 22,000