Long-Term Debt (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Jan. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Increase in Basis Points in the Margin Applicable to Determing the Interest Rate on New Debt		25
Payments of Debt Issuance Costs	$ 351,000
Future One-Time Cash Restructuring Charges Added Back to EBITDA	20,000,000
Incremental Increase to Future One-Time Cash Restructuring Charges Added Back to EBITDA	5,000,000
Long-term Debt	56,116,000		45,286,000
Long-term Debt, Current Maturities	(2,456,000)		(14,102,000)
Long-term Debt, Excluding Current Maturities	53,660,000		31,184,000
Line of Credit [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	100,000,000	250,000,000
Long-term Debt	38,571,000		28,109,000
Convertible Subordinated Debt [Member] | Convertible Senior Subordinated Debentures February 2027 [Member]
Debt Instrument [Line Items]
Long-term Debt	10,986,000		10,641,000
Write off of Deferred Debt Issuance Cost	1,070,000
Notes Payable, Other Payables [Member] | Other Notes and Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt	6,559,000		6,536,000
Maximum [Member]
Debt Instrument [Line Items]
Reductions in Capital Expenditures	$ 25,000,000
Minimum [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Ratio of Earnings before Interest Taxes Depreciation and Amortization to Interest Expense	3.50
Minimum [Member] | Line of Credit [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Earnings Before Interest Taxes Depreciation and Amortization	1.00
Q1 Current Year [Member] | Maximum [Member] | Line of Credit [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Earnings Before Interest Taxes Depreciation and Amortization	4.75
Q2 Current Year [Member] | Maximum [Member] | Line of Credit [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Earnings Before Interest Taxes Depreciation and Amortization	4.50
Q3 Current Year [Member] | Maximum [Member] | Line of Credit [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Earnings Before Interest Taxes Depreciation and Amortization	4.00
Q4 Current Year [Member] | Maximum [Member] | Line of Credit [Member] | Senior Secured Revolving Credit Facility October 2015 [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Earnings Before Interest Taxes Depreciation and Amortization	3.50