Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Period Type:	instant

- Definition

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

+ References

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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

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No definition available.

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- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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SUBSEQUENT EVENTS - Others (Details) - USD ($) $ in Thousands		6 Months Ended
	Jul. 16, 2018	Jul. 01, 2018	Jul. 13, 2018	Dec. 31, 2017
Subsequent Events
Face Value		$ 709,519
9.00% senior secured notes due in 2022
Subsequent Events
Amount of debt redeemed		$ 75,000
Interest rate (as a percent)		9.00%		9.00%
Face Value		$ 344,101
7.150% unsecured debentures due in 2027
Subsequent Events
Interest rate (as a percent)		7.15%		7.15%
Face Value		$ 89,188
6.875% unsecured debentures due in 2029
Subsequent Events
Interest rate (as a percent)		6.875%		6.875%
Face Value		$ 276,230
Subsequent event
Subsequent Events
Face Value	$ 760,418
Subsequent event \| 9.00% senior secured notes due in 2022
Subsequent Events
Amount of debt redeemed	344,100
Redemption premium paid	$ 15,500
Redemption of debt as a percentage of principle amount	4.50%
Subsequent event \| 9.00% senior secured notes due in 2026
Subsequent Events
Redemption of debt as a percentage of principle amount	100.00%
Interest rate (as a percent)	9.00%
Face Value	$ 310,000
Subsequent event \| 9.00% senior secured notes due in 2026 \| Maximum
Subsequent Events
Redemption of debt as a percentage of principle amount	40.00%
Subsequent event \| 7.795% tranche A junior term loan due in 2030
Subsequent Events
Interest rate (as a percent)	7.795%
Face Value	$ 157,083
Subsequent event \| 6.875% tranche B junior term loan due in 2030
Subsequent Events
Interest rate (as a percent)	6.875%
Face Value	$ 193,466
Subsequent event \| 7.150% unsecured debentures due in 2027
Subsequent Events
Interest rate (as a percent)	7.15%		7.15%
Face Value	$ 7,105
Subsequent event \| 6.875% unsecured debentures due in 2029
Subsequent Events
Interest rate (as a percent)	6.875%		6.875%
Face Value	$ 82,764
Subsequent event \| ABL Credit Agreement
Subsequent Events
Face Value	$ 10,000
Subsequent event \| ABL Credit Agreement \| Maximum
Subsequent Events
Debt term (in years)	5 years