Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges - Additional Information (Details)

v3.5.0.2
Restructuring Charges - Additional Information (Details)
3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Dec. 31, 2015
Employee
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Restructuring Cost And Reserve [Line Items]          
Restructuring charges   $ 2,561,000   $ 15,000 $ 2,561,000
2015 Restructuring [Member]          
Restructuring Cost And Reserve [Line Items]          
Number of employees terminated | Employee     52    
2015 Restructuring [Member] | Severance Costs and Contract Termination Costs [Member]          
Restructuring Cost And Reserve [Line Items]          
Restructuring charges $ 0 $ 2,200,000   $ 15,000 $ 400,000