Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

+ Details

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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://fasb.org/us-gaap/role/ref/legacyRef
-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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Balance Type:	na
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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.

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- Details

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Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2018	Sep. 30, 2018	Jan. 31, 2018	Dec. 31, 2017
11.25% Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes	$ 234
Debt instrument interest rate	11.25%	11.25%	11.25%
8.750% Senior Notes Due April 15, 2019
Debt Instrument [Line Items]
Debt instrument interest rate	8.75%		8.75%	8.75%