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

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

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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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Balance Type:	na
Period Type:	duration

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

+ Details

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- Details

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Long-Term Debt - Senior Notes (Details) - Senior Notes - USD ($)	Apr. 15, 2022	Oct. 15, 2021	Apr. 15, 2021	Oct. 15, 2020	Apr. 15, 2020	Apr. 14, 2020	Oct. 15, 2019	Oct. 15, 2018	Oct. 14, 2018	Sep. 30, 2017	Mar. 31, 2017	Jan. 31, 2017
10.5% Senior Notes
Debt Instrument [Line Items]
Senior note face amount										$ 440,000,000
Debt instrument interest rate										10.50%
7.0% Senior Notes
Debt Instrument [Line Items]
Senior note face amount											$ 400,000,000
Debt instrument interest rate											7.00%	7.00%
Scenario, Forecast \| 10.5% Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage		100.00%		102.625%			105.25%	107.875%	100.00%
Percentage of principal amount redeemed									40.00%
Scenario, Forecast \| 7.0% Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage	100.00%		102.625%		105.25%	100.00%
Percentage of principal amount redeemed						40.00%
Up to 40% \| Scenario, Forecast \| 10.5% Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage									110.50%
Up to 40% \| Scenario, Forecast \| 7.0% Senior Notes
Debt Instrument [Line Items]
Redemption price, percentage						107.00%