Restructuring Costs - Additional Information (Detail) $ in Millions |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
|
Dec. 31, 2015
USD ($)
|
Sep. 30, 2015
USD ($)
|
Jun. 30, 2015
USD ($)
|
Dec. 31, 2015
Employee
|
Dec. 31, 2016 |
Dec. 31, 2015
USD ($)
|
|
| Restructuring Cost And Reserve [Line Items] | ||||||
| Workforce reduction, number of individuals | Employee | 160 | |||||
| Workforce reduction, recognized aggregate charge | $ 0.2 | $ 0.4 | $ 21.1 | $ 21.7 | ||
| Accrued severance costs expected to be paid | 2017-03 | |||||
| Cost Of Sales | ||||||
| Restructuring Cost And Reserve [Line Items] | ||||||
| Workforce reduction, recognized aggregate charge | 10.8 | |||||
| Selling, General and Administrative Expense | ||||||
| Restructuring Cost And Reserve [Line Items] | ||||||
| Workforce reduction, recognized aggregate charge | $ 10.9 | |||||