The percentage of ownership of common stock or equity participation in the consolidated subsidiary.

No definition available.

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- Definition

Ratio applied for early tender to the repurchase of debt instrument per $1,000 of principal.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

Represents the premium paid upon redemption of a debt instrument.

+ References

No definition available.

+ Details

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- Definition

Ratio applied to the repurchase of debt instrument per $1,000 of principal.

+ References

No definition available.

+ Details

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- Definition

Percentage amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Publisher FASB
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-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

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Balance Type:	credit
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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

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- Details

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- Details

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Debt - 8.50% Senior Notes due 2019 (Details) - USD ($)		12 Months Ended
Debt - 8.50% Senior Notes due 2019 (Details) - USD ($)	May 18, 2017	Dec. 31, 2017	Jul. 01, 2017	Dec. 31, 2016	Jun. 30, 2014
Debt
Loss on extinguishment of debt		$ 9,848,000
8.5% Senior Notes Due 2019
Debt
Stated interest rate (percent)	8.50%			8.50%
Aggregate principal amount	$ 200,000,000
Amount of debt repurchased	$ 45,500,000		$ 154,500,000
Percentage of debt repurchased	23.00%
Purchase price of debt	$ 1,038.87
Early tender purchase price of debt	$ 6.99
Loss on extinguishment of debt		9,800,000
Redemption premium		$ 4,900,000
6.625% Senior Notes Due 2022
Debt
Stated interest rate (percent)	6.625%
Aggregate principal amount	$ 400,000,000
Consolidation, Wholly Owned Subsidiary, Parent Ownership Interest, Percentage	100.00%
Senior Notes \| 8.5% Senior Notes Due 2019
Debt
Stated interest rate (percent)		6.625%			8.50%
Aggregate principal amount					$ 200,000,000
Senior Notes \| 8.5% Senior Notes Due 2019 \| Subsidiary guarantors
Debt
Parent ownership percentage (percent)		100.00%