Debt Including Capital Lease Obligations - Asset-Based Lending Facility (Details) (USD $)	0 Months Ended	3 Months Ended
	Feb. 05, 2013 ABL Facility	Mar. 31, 2014 ABL Facility	Mar. 31, 2014 ABL Facility LIBOR	Mar. 31, 2014 ABL Facility LIBOR Minimum	Mar. 31, 2014 ABL Facility LIBOR Maximum	Mar. 31, 2014 ABL Facility Base Rate	Mar. 31, 2014 ABL Facility Base Rate Minimum	Mar. 31, 2014 ABL Facility Base Rate Maximum	Mar. 31, 2014 ABL Term Loan	Mar. 31, 2014 ABL Term Loan LIBOR	Mar. 31, 2014 ABL Term Loan LIBOR Minimum	Mar. 31, 2014 ABL Term Loan LIBOR Maximum	Mar. 31, 2014 ABL Term Loan Base Rate	Mar. 31, 2014 ABL Term Loan Base Rate Minimum	Mar. 31, 2014 ABL Term Loan Base Rate Maximum	Mar. 31, 2014 ABL Revolver	Mar. 31, 2014 Fixed asset sub-line LIBOR	Mar. 31, 2014 Fixed asset sub-line LIBOR Minimum	Mar. 31, 2014 Fixed asset sub-line LIBOR Maximum	Mar. 31, 2014 Fixed asset sub-line Base Rate	Mar. 31, 2014 Fixed asset sub-line Base Rate Minimum	Mar. 31, 2014 Fixed asset sub-line Base Rate Maximum	Mar. 31, 2014 ABL Facility, letter of credit	Mar. 31, 2014 Senior notes 7.875% Senior Notes	Dec. 31, 2013 Senior notes 7.875% Senior Notes	Mar. 31, 2013 Senior notes 7.875% Senior Notes	Feb. 28, 2013 Senior notes 7.875% Senior Notes	Feb. 05, 2013 Senior notes 7.875% Senior Notes
Line of Credit Facility [Line Items]
ABL Facility term	5 years
Stated interest rate on debt instrument																								7.875%	7.875%	7.875%	7.875%	7.875%
ABL Facility maturity period prior to maturity of the 4.25% Convertible Senior Notes		60 days
ABL maximum borrowings capacity		$ 150,000,000							$ 7,500,000
Borrowings under the Credit Facility Revolver																5,000,000
ABL Term Loan periodic payment									2,000,000
ABL amount outstanding																							23,000,000
Remaining borrowing capacity of the Facility																$ 90,000,000
Variable rate basis		LIBOR	LIBOR			Base Rate				LIBOR			Base Rate				LIBOR			Base Rate
Basis spread on variable rate			2.75%	1.75%	2.25%		0.25%	0.75%			2.75%	3.25%		1.25%	1.75%			2.25%	2.75%		0.75%	1.25%
Weighted average interest rate			2.90%
Percentage of stocks of domestic subsidiaries, subject to exception and lien		100.00%
Percentage of stocks of foreign subsidiaries, subject to exception and lien		65.00%
Line of Credit Facility, Covenant Terms		20
Line of Credit Facility, Covenant Terms, Depository Clause, Availability Threshold		12.50%