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Share-based Compensation Stock-Based Compensation Exepnse (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Employee Service Share-based compensation, Nonvested Awards, Compensation Costs Not yet Recognized, Year One $ 62,000  
Employee Service Share-based Compensation, Nonvested awards, Compensation Costs Not yet Recognized, Year Two 16,000  
Share-based compensation 36,000 55,000
Adjustments to Additional Paid in Capital, Share-based Compensation of Discontinued Operations, Requisite Service Period Recognition, Total. 0 (7,000)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount 0  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 78,000  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition 1 year 2 months 6 days  
Cost of Contract Reserach and Services [Member]
   
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Share-based compensation 5,000 4,000
Cost of Sales [Member]
   
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Share-based compensation 3,000 15,000
Selling, General and Administrative Expenses [Member]
   
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Share-based compensation $ 28,000 $ 36,000