Common Shares, Reserved for Distribution

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- Definition

Plan of Reorganization, Equity Interest Issuable, Number of Shares

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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.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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No definition available.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

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- Definition

The number of warrants issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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- Definition

Aggregate amount of cumulative preferred dividends in arrears.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (b)
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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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- Definition

Number of new stock issued during the period.

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

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Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended			4 Months Ended	9 Months Ended
	Feb. 10, 2017	Oct. 04, 2016	Feb. 09, 2017	Sep. 30, 2017	Dec. 31, 2016	Mar. 31, 2016	Feb. 09, 2017	Sep. 30, 2016
Successor
Class of Stock
Common stock, shares issued				35,801,000	21,042,000
Common stock, par value (in dollars per share)				$ 0.001	$ 0.001
Successor \| New Common Stock
Class of Stock
Common stock, shares issued		18,900,000
Common stock, par value (in dollars per share)		$ 0.001
Common stock, shares reserved for distribution		400,000
Shares issued				100,000
Successor \| Series A Warrants
Class of Stock
Number of shares to be issued		4,900,000
Number of common shares exercised for each warrant		1
Issuance of warrants for general unsecured claims (in shares)		4,500,000		100,000
Successor \| Series B Warrants
Class of Stock
Number of shares to be issued		2,100,000
Number of common shares exercised for each warrant		1
Issuance of warrants for general unsecured claims (in shares)		1,900,000
Successor \| Holders of Unsecured Claims \| Series A Warrants
Class of Stock
Exercise price (in usd per share)		$ 41.34
Successor \| Holders of Unsecured Claims \| Series B Warrants
Class of Stock
Exercise price (in usd per share)		$ 42.03
Successor \| Convertible Notes \| Convertible Senior Unsecured Notes
Class of Stock
Common stock issued for debt exchange (in shares)	14,100,000	15,000,000.0	300,000		700,000		1,000,000.0
Predecessor \| 8.5% Convertible perpetual preferred stock
Class of Stock
Preferred stock, dividend rate, percentage						8.50%		8.50%
Preferred dividends in arrears								$ 11.3
Predecessor \| 7.0% Convertible perpetual preferred stock
Class of Stock
Preferred stock, dividend rate, percentage								7.00%
Preferred dividends in arrears								$ 21.0