Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges (Details)

v3.5.0.2
Restructuring Charges (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
position
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Restructuring Charges        
Number of positions eliminated | position 46      
Restructuring charges $ 5,770,000   $ 5,770,000  
Restructuring charges paid or to be paid in cash 5,000,000      
Restructuring, asset impairment charges 319,000      
Total stock-based compensation expense 1,714,000 $ 1,815,000 5,166,000 $ 5,778,000
Restructuring charges related to severance, COBRA benefits and outplacement costs 1,400,000   1,400,000  
Restructuring charge        
Restructuring Charges        
Total stock-based compensation expense $ 499,000   $ 499,000