Quarterly report pursuant to Section 13 or 15(d)

Financing - Components of Long-Term Debt (Detail)

v3.10.0.1
Financing - Components of Long-Term Debt (Detail) - USD ($)
$ in Millions
Sep. 30, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total debt $ 311.3 $ 314.0
Less: Current portion of debt (5.0) (5.0)
Noncurrent portion of debt 306.3 309.0
Term Loan Facility [Member]    
Debt Instrument [Line Items]    
Long-term debt 313.6 316.0
Deferred financing fees and discount on debt (5.1) (5.9)
Capital Lease Obligations [Member]    
Debt Instrument [Line Items]    
Obligations under capital lease $ 2.8 $ 3.9