Income Taxes - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
Income Tax Examination [Line Items] | |||||
Effective tax benefit rate | 41.30% | 187.90% | 43.10% | (280.50%) | |
U.S. federal statutory rate | 35.00% | 35.00% | 35.00% | 35.00% | |
Unrecognized tax benefits | $ 1.8 | $ 1.8 | $ 1.9 | ||
Accrued interest payable for taxes | 0.1 | 0.1 | 0.1 | ||
Liability for income tax penalties | 0.0 | 0.0 | $ 0.0 | ||
Foreign Tax Authority [Member] | |||||
Income Tax Examination [Line Items] | |||||
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability | (14.3) | (14.3) | |||
State and Local Jurisdiction [Member] | |||||
Income Tax Examination [Line Items] | |||||
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability | $ 12.8 | $ 12.8 |