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Share-based Compensation Stock-Based Compensation Exepnse (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 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 $ 48   $ 48  
Employee Service Share-based Compensation, Nonvested awards, Compensation Costs Not yet Recognized, Year Two 4   4  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 52   52  
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount     0 0
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition     1 year 0 months 28 days  
Segment, Continuing Operations [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation 41 66 77 121
Segment, Continuing Operations [Member] | Cost of Contract Reserach and Services [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation 5 6 10 10
Segment, Continuing Operations [Member] | Cost of Sales [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation 4 10 7 25
Segment, Continuing Operations [Member] | Selling, General and Administrative Expenses [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation 32 50 60 86
Segment, Discontinued Operations [Member]
       
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Share-based compensation $ 0 $ 0 $ 0 $ (7)