Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges (Details)

v3.7.0.1
Restructuring Charges (Details)
3 Months Ended
Mar. 31, 2017
USD ($)
Sep. 30, 2016
USD ($)
employee
Mar. 31, 2016
USD ($)
Restructuring Charges      
Number of positions eliminated | employee   46  
Restructuring charges   $ 5,800,000  
Restructuring charges paid or to be paid in cash   5,000,000  
Restructuring, asset impairment charges   319,000  
Total stock-based compensation expense $ 955,000   $ 1,438,000
Restructuring charges related to severance, COBRA benefits and outplacement costs $ 433,000    
Restructuring charge      
Restructuring Charges      
Total stock-based compensation expense   $ 499,000