Amount of new indebtedness permitted under senior debt covenants.

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Debt Covenants, Percent of Proceeds Appropriated to Credit Facility

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Minimum basis spread on variable interest rate upon occurrence of price decreasing trigger event.

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Debt Instrument, Debt Default, Interest Rate, Penalty Increase

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Threshold for leverage covenants, percentage.

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Long-term Debt and Capital Lease Obligations, Payments

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The number of prior quarters in which the maximum net leverage ratio is consistent.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt including accrued interest. Excludes payments of capital lease obligations.

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Stock Purchase Agreement, Covenant Terms, Minimum Percentage of Proceeds to be Used on Repayment of Debt

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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Amount of loss contingency liability.

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DEBT- Narrative (Details)		3 Months Ended	9 Months Ended		12 Months Ended
DEBT- Narrative (Details)	Jan. 31, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($) Quarters	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)	Mar. 09, 2015	Feb. 11, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jul. 31, 2013 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Debt Default, Interest Rate, Penalty Increase			2.00%
Settlement agreement accrual					$ 15,000,000			$ 15,000,000
Maximum Net Leverage Ratio Is Consistent With Prior Quarters Number \| Quarters			4
Minimum percentage of proceeds to be used to repay outstanding borrowings						75.00%
Repayments of indebtedness and accrued interest from proceeds of purchase agreement			$ 45,300,000
Repayments of Long-term Lines of Credit			178,663,000	$ 241,203,000
Long-term debt, net of current portion		$ 409,327,000	$ 409,327,000		$ 418,408,000
Senior credit facility \| Eurodollar
Debt Instrument [Line Items]
Minimum basis spread on debt	5.25%
Senior credit facility \| Base Rate
Debt Instrument [Line Items]
Minimum basis spread on debt	4.25%
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity									$ 75,000,000
Threshold percentage for revolver covenant triggering event					25.00%
Effective interest rate		7.50%	7.50%
Repayments of Long-term Lines of Credit			$ 22,400,000
Term Loan Facilities
Debt Instrument [Line Items]
Effective interest rate		6.50%	6.50%
Long-term Debt and Capital Lease Obligations, Payments		$ 3,100,000	$ 3,100,000
Long-term debt, net of current portion		166,300,000	166,300,000
Senior Unsecured 8.875% Notes
Debt Instrument [Line Items]
Face amount of debt instruments							$ 200,000,000.0
Stated rate on debt							8.875%
Debt discount							$ 5,000,000
Financing costs incurred with issuance of 2021 Notes							$ 500,000
SecondAmendment [Member] \| Senior credit facility \| Eurodollar
Debt Instrument [Line Items]
Basis spread on variable rate	6.00%
SecondAmendment [Member] \| Senior credit facility \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	5.00%
SecondAmendment [Member] \| Second Lien Debt
Debt Instrument [Line Items]
Additional debt allowed under debt agreements	$ 150,000,000.0								150,000,000.0
SecondAmendment [Member] \| Unsecured Debt
Debt Instrument [Line Items]
Additional debt allowed under debt agreements	$ 250,000,000.0								$ 250,000,000.0
Percentage of debt proceeds to be applied to revolving credit facility	100.00%
ThirdAmendment [Member] \| Senior credit facility
Debt Instrument [Line Items]
Financing costs incurred with issuance of 2021 Notes		$ 1,200,000	$ 1,200,000
ThirdAmendment [Member] \| Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Threshold percentage for revolver covenant triggering event		5.00%