Schedule of long-term Debt (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Capital leases	$ 4.3	$ 4.1
Current portion of long-term debt	(2.4)	(2.3)
Total long-term debt, net	316.7	312.1
Senior Secured Notes
Debt Instrument [Line Items]
Principal amount outstanding	305.0	305.0
Unamortized original issue discount and issuance costs	(12.3)	(14.3)
Senior Secured Notes, net	292.7	290.7
Asset Based Facility
Debt Instrument [Line Items]
Principal amount outstanding	24.0	22.0
Unamortized original issue discount and issuance costs	(1.9)	(2.4)
Senior Secured Notes, net	$ 22.1	$ 19.6

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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