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Commitments, Contingencies and Other Matters (Details) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
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Mar. 31, 2013
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Dec. 31, 2013
Commitments, Contingencies and Other Matters      
Number of employees impacted 49 20  
Restructuring and other charges      
Restructuring charges $ 392,000 $ 531,000 $ 1,485,000
Personnel severance and related costs
      
Restructuring and other charges      
Restructuring charges 400,000 500,000  
Data Storage
      
Restructuring and other charges      
Additional restructuring charges throughout the remainder of 2014 $ 1,300,000