Financing Arrangements (Details)					1 Months Ended		3 Months Ended	12 Months Ended
	Jun. 01, 2016 USD ($)	Feb. 16, 2016 USD ($)	Apr. 17, 2014 USD ($)	Jun. 01, 2011	Apr. 17, 2014 USD ($)	Jun. 30, 2011 USD ($)	Mar. 31, 2012 day $ / shares	Dec. 31, 2016 USD ($) letter_of_credit $ / shares	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Aug. 12, 2014 USD ($)
Debt Instrument [Line Items]
Additional financing costs paid								$ 5,100,000
Amortization of deferred financing costs								10,791,000	$ 4,283,000	$ 9,985,000
Non-cash conversion of convertible notes to common shares								43,215,000	44,310,000	32,475,000
Convertible Debt [Member]
Debt Instrument [Line Items]
Unamortized debt financing costs								0	136,000
Amortization of deferred financing costs								136,000	438,000	780,000
Interest expense								$ 1,573,000	6,299,000	10,192,000
Stated interest rate								3.50%
Loss on conversion								$ 0	1,235,000	990,000
Notes [Member] | Senior Notes [Member]
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
Conversion ratio				0.1142
Initial conversion price (in dollars per share) | $ / shares								$ 8.76
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							30 days
Original amount of debt converted	$ 43,200,000								44,300,000	32,500,000
Notes [Member] | Senior Notes [Member] | Over-Allotment Option [Member]
Debt Instrument [Line Items]
Convertible notes payable						$ 20,000,000
JP Morgan [Member] | Term Loan Facility [Member] | Eurodollar [Member]
Debt Instrument [Line Items]
Basis spread on variable rate								5.00%
JP Morgan [Member] | Term Loan Facility [Member] | ABR Spread [Member]
Debt Instrument [Line Items]
Basis spread on variable rate								4.00%
JP Morgan [Member] | JPM Revolving Facility [Member]
Debt Instrument [Line Items]
Potential increase in basis spread on variable rate in event of default			2.00%		2.00%
Potential maximum borrowing capacity			$ 200,000,000.0		$ 200,000,000.0
Covenant, minimum liquidity			$ 120,000,000		$ 120,000,000
Covenant, minimum liquidity, additional percentage of commitments			25.00%		25.00%
Covenant, minimum EBITDA to fixed charges ratio			1.00		1.00
Rolling quarterly measurement duration					12 months
JP Morgan [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt instrument term			7 years
Voluntary prepayment of debt		$ 200,000,000
Amount outstanding under credit facility								$ 831,900,000
JP Morgan [Member] | Term Loan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 600,000,000.00		$ 600,000,000.00
Potential increase to maximum borrowing capacity			$ 150,000,000.0		$ 150,000,000.0
Quarterly principal repayment as a percent of initial loan amount			0.25%		0.25%
Potential reduction in basis spread on variable rate			0.25%		0.25%
Potential increase in basis spread on variable rate in event of default			2.00%		2.00%
Unamortized debt financing costs								21,500,000	26,800,000
Amortization of deferred financing costs								10,400,000	3,800,000	8,800,000
Interest expense								43,500,000	$ 47,300,000	$ 27,200,000
JP Morgan [Member] | Term Loan Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Potential reduction in basis spread on variable rate, EBITDA ratio threshold			2.25		2.25
JP Morgan [Member] | Term Loan Facility [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate					2.50%
JP Morgan [Member] | Term Loan Facility [Member] | Eurodollar [Member]
Debt Instrument [Line Items]
Basis spread on variable rate					3.50%
Minimum interest rate on facility					4.50%
JP Morgan [Member] | Incremental Term Loan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity											$ 445,000,000.00
JP Morgan [Member] | Revolving Credit Facility [Member] | JPM Revolving Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 150,000,000.0		$ 150,000,000.0
Debt instrument term			5 years
Borrowing base, percent of eligible accounts receivable			85.00%		85.00%
Borrowing base, percent of materials and WIP on FIFO			65.00%		65.00%
Borrowing base, percent of liquidation value			85.00%		85.00%
Borrowing base, percent of finished goods			75.00%		75.00%
Borrowing base, percent of liquidation of finished goods			85.00%		85.00%
Borrowing base, percent of eligible inventory liquidation value			85.00%		85.00%
Borrowing base, percent of market value finished goods			75.00%		75.00%
Commitment fees, minimum availability under credit facility			12.50%		12.50%
Commitment fee, threshold, amount of commitments			$ 15,000,000		$ 15,000,000
Commitment fee, threshold, number of consecutive days					30 days
Unused line fee					0.25%
JP Morgan [Member] | Letter of Credit [Member] | JPM Revolving Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 10,000,000.0		$ 10,000,000.0
JP Morgan [Member] | JPM Revolving Facility [Member]
Debt Instrument [Line Items]
Remaining borrowing capacity								$ 147,800,000
JP Morgan [Member] | JPM Revolving Facility [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of credit outstanding (in letter of credit) | letter_of_credit								1
Letters of credit outstanding								$ 2,200,000