Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges (Details)

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Restructuring Charges (Details) (USD $)
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2013
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Sep. 30, 2013
Sep. 30, 2013
Restructuring Charges      
Number of positions eliminated 30    
Restructuring charges   $ 1,679,000 $ 1,679,000
Restructuring charges paid or to be paid in cash 1,500,000    
Restructuring charges related to COBRA benefits 171,000 171,000 171,000
Non-cash stock based compensation expense
     
Restructuring Charges      
Restructuring charges $ 239,000