Adjustments to temporary equity, stock issued, issuance costs.

No definition available.

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- Definition

Debt instrument maturity year.

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- Definition

Debt instrument percentage of par value owned by supporting holders.

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- Definition

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

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- Definition

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

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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

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

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- Definition

Number of new stock issued during the period.

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Long-term Debt Exchange - Additional Information (Details) - USD ($)	1 Months Ended	6 Months Ended		12 Months Ended
	Jan. 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Debt Instrument [Line Items]
Gain on extinguishment of debt		$ 53,000	$ 0
Second Lien Notes
Debt Instrument [Line Items]
Debt stated interest rate percentage		10.00%		10.00%
Debt, maturity year		2019		2019
Debt, face amount		$ 6,965,000		$ 85,239,000
Senior Notes
Debt Instrument [Line Items]
Debt stated interest rate percentage		10.00%		10.00%
Debt, maturity year		2019		2019
Debt, face amount		$ 1,865,000		$ 1,872,000
Restructuring Support Agreement \| Supporting Holders \| Secured Debt \| Second Lien Notes
Debt Instrument [Line Items]
Debt stated interest rate percentage	10.00%
Debt, maturity year	2019
Percentage of par value of debt owned by holders	85.00%
Restructuring Support Agreement \| Supporting Holders \| Secured Debt \| Senior Notes
Debt Instrument [Line Items]
Debt stated interest rate percentage	10.00%
Debt, maturity year	2019
Exchange \| Second Lien Notes and Senior Secured Notes
Debt Instrument [Line Items]
Gain on extinguishment of debt	$ 100,000
Exchange \| Secured Debt \| Second Lien Notes
Debt Instrument [Line Items]
Debt, face amount	78,000,000
Exchange \| Secured Debt \| Senior Notes
Debt Instrument [Line Items]
Debt, face amount	$ 7,000
Exchange \| Secured Debt \| Common Stock \| Second Lien Notes and Senior Secured Notes
Debt Instrument [Line Items]
Issuance of preferred stock (in shares)	800,000
Value of shares issued		500,000
Exchange \| Secured Debt \| Series A Preferred Stock \| Second Lien Notes and Senior Secured Notes
Debt Instrument [Line Items]
Issuance of preferred stock (in shares)	30,000
Value of shares issued		62,000,000
Allocated stock issuance costs		3,600,000
Exchange \| Secured Debt \| Series B Preferred Stock \| Second Lien Notes and Senior Secured Notes
Debt Instrument [Line Items]
Issuance of preferred stock (in shares)	900,000
Value of shares issued		$ 10,800,000
Exchange \| Secured Debt \| Series C Warrants \| Second Lien Notes and Senior Secured Notes
Debt Instrument [Line Items]
Issuance of preferred stock (in shares)	8,300,000	4,800,000
Value of shares issued		$ 4,800,000