Financing Arrangements - Narrative (Details)					3 Months Ended	12 Months Ended
	Jun. 01, 2016 USD ($)	Feb. 16, 2016 USD ($)	Apr. 17, 2014 USD ($)	Jun. 01, 2011 USD ($) $ / shares	Mar. 31, 2012 day $ / shares	Dec. 31, 2017 USD ($) letter_of_credit	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 loan_agreement
Debt Instrument [Line Items]
Number of term loan agreements | loan_agreement									2
Amortization of deferred financing costs						$ 5,216,000	$ 10,791,000	$ 4,283,000
Carrying amount of liability component						815,195,000	809,979,000
Convertible Debt
Debt Instrument [Line Items]
Amortization of deferred financing costs						0	136,000	438,000
Interest expense						0	1,573,000	6,299,000
Stated interest rate				3.50%
Loss on conversion						$ 0	0	1,235,000
Carrying amount of liability component							0
Unamortized discount of the liability component							0
Notes | Senior Notes
Debt Instrument [Line Items]
Convertible notes payable				$ 120,000,000
Stated interest rate				3.50%
Proceeds from convertible debt after deducting underwriting fees and other related expenses				$ 115,300,000
Initial conversion price (in Dollars per share) | $ / shares				$ 8.76
Conversion ratio				0.1141553
Stock price trigger for conversion (in Dollars per share) | $ / shares					$ 11.39
Convertible threshold trading days (in day) | day					20
Convertible threshold consecutive trading days | day					30
Original amount of debt converted	$ 43,200,000							44,300,000
Notes | Senior Notes | Over-Allotment Option
Debt Instrument [Line Items]
Convertible notes payable				$ 20,000,000
JP Morgan | Term Loan Facility | Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate						5.00%
JP Morgan | Term Loan Facility | ABR Spread
Debt Instrument [Line Items]
Basis spread on variable rate						4.00%
JP Morgan | JPM Revolving Facility
Debt Instrument [Line Items]
Potential maximum borrowing capacity			$ 200,000,000.0
Potential increase in basis spread on variable rate in event of default			2.00%
Covenant, minimum liquidity			$ 120,000,000
Covenant, minimum liquidity, additional percentage of commitments			25.00%
Covenant, minimum EBITDA to fixed charges ratio			1.00
Rolling quarterly measurement duration			12 months
JP Morgan | Term Loan Facility
Debt Instrument [Line Items]
Voluntary prepayment of debt		$ 200,000,000
Aggregate principal amount financed						$ 1,045,000,000
Amount outstanding under credit facility						831,900,000
Unamortized debt financing costs						16,500,000
Amortization of deferred financing costs						5,000,000	10,400,000	3,800,000
Interest expense						45,500,000	$ 43,500,000	$ 47,300,000
JP Morgan | Revolving Credit Facility | JPM Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 150,000,000.0
Borrowing base, percent of eligible accounts receivable			85.00%
Borrowing base, percent of materials and WIP on FIFO			65.00%
Borrowing base, percent of liquidation value			85.00%
Borrowing base, percent of finished goods			75.00%
Borrowing base, percent of liquidation of finished goods			85.00%
Borrowing base, percent of eligible inventory liquidation value			85.00%
Borrowing base, percent of market value finished goods			75.00%
Commitment fees, minimum availability under credit facility			12.50%
Commitment fee, threshold, amount of commitments			$ 15,000,000
Commitment fee, threshold, number of consecutive days			30 days
Debt instrument term			5 years
Unused line fee			0.25%
JP Morgan | Letter of Credit | JPM Revolving Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 10,000,000.0
JP Morgan | JPM Revolving Facility
Debt Instrument [Line Items]
Amount outstanding under credit facility						$ 0
JP Morgan | JPM Revolving Facility | Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding (in letter of credit) | letter_of_credit						0
JP Morgan | JPM Revolving Facility | JPM Revolving Facility
Debt Instrument [Line Items]
Remaining borrowing capacity						$ 150,000,000