Litigation, Commitments and Contingencies - Operating Leases (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) renewal_term	Dec. 31, 2015 USD ($)
Operating Leased Assets [Line Items]
Number of renewal terms (or more) | renewal_term	1
Operating Leases, Rent Expense, Net [Abstract]
Minimum lease payments	$ 3.6	$ 8.1
Contingent rentals	(2.0)	0.1
Rental income	0.0	(8.2)
Total rental expense, net	1.6	0.0
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2017	1.1
2018	1.0
2019	0.7
2020	0.5
2021	0.3
Thereafter	0.1
Total	3.7
Warehouse providers | Cost of Sales
Operating Leases, Rent Expense, Net [Abstract]
Minimum lease payments	0.0	0.6
Contingent rentals	$ 0.0	$ 0.7
Minimum
Operating Leased Assets [Line Items]
Operating lease renewal term	1 year
Maximum
Operating Leased Assets [Line Items]
Operating lease renewal term	3 years