Subsequent Event (Details) (USD $)	0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	6 Months Ended					1 Months Ended	6 Months Ended	12 Months Ended
	Feb. 12, 2014	Jan. 17, 2014	May 30, 2013	Jan. 31, 2014	Jun. 30, 2013	Jan. 31, 2014 Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Dec. 31, 2013 Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Dec. 31, 2012 Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Oct. 28, 2010 Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Jan. 31, 2014 Convertible Senior Subordinated Debentures February 2027 [Member] Convertible Subordinated Debt [Member]	Jun. 30, 2013 Convertible Senior Subordinated Debentures February 2027 [Member] Convertible Subordinated Debt [Member]	Dec. 31, 2013 Convertible Senior Subordinated Debentures February 2027 [Member] Convertible Subordinated Debt [Member]	Dec. 31, 2012 Convertible Senior Subordinated Debentures February 2027 [Member] Convertible Subordinated Debt [Member]	Dec. 31, 2013 Minimum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	May 28, 2013 Minimum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Dec. 31, 2014 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Sep. 30, 2014 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Jun. 30, 2014 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Mar. 31, 2014 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Dec. 31, 2013 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	May 28, 2013 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Line of Credit [Member]	Dec. 31, 2013 Maximum [Member] Senior Secured Revolving Credit Facility October 2015 [Member] Convertible Subordinated Debt [Member]
Subsequent Event [Line Items]
Interest Coverage Ratio							7.51	19.00						3.00	3.50
Future One-Time Cash Restructuring Charges Added Back to EBITDA				$ 20,000,000	$ 15,000,000
Debt Amendment Date			May 30, 2013
Increase in Future One-Time Cash Restructuring Charges Added back to EBITDA				5,000,000
Line of Credit Facility, Current Borrowing Capacity						100,000,000	200,000,000
Leverage Ratio							2.30	2.66								3.5	4.0	4.5	4.75	4.00	3.50	3.00
Line of Credit Facility, Maximum Borrowing Capacity							250,000,000		400,000,000
Capital Expenditure Limit Related to Debt Agreement				25,000,000
Increase in Basis Points in the Margin Applicable to Determing the Interest Rate on New Debt			25	25
Payments of Debt Issuance Costs				375,000	436,000
Write off of Deferred Debt Issuance Cost										1,070,000	1,216,000	11,000	1,554,000
Subsequent Event Project Related Expenses, pre-tax	3,500,000
Subsequent Event One-Time Cash Restructuring Charge	1,400,000
Subsequent Event One-Time Non-Cash Restructuring Charge	1,100,000
Subsequent Event Operating Expenses	1,000,000
Subsequent Event Future Annualized Savings Related to Plant Closure	2,700,000
Subsequent Event, Date	Feb. 12, 2014	Jan. 17, 2014		Jan. 31, 2014
Subsequent Event, Purchase Agreement Claim Amount		$ 1,352,000