Debt Instrument Convertible Conversion Percentage

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- Definition

Fair Value Assets Liabilities Quantitative Information [Line Items]

+ References

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- Definition

Gain loss on conversion of convertible notes.

+ References

No definition available.

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- Definition

Number 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))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5618551-113959

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (a),(c),(d),(e)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624163-113959

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Jun. 15, 2015	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014
Fair Value Assets Liabilities Quantitative Information [Line Items]
Loss on increase in estimated fair value of derivatives	$ (2,692)	$ (2,692)	$ (2,291)
Loss upon the conversion Bridge Notes including the extinguishment of the embedded compound derivative		(1,170)	(1,170)
Fair Value, Measurements, Recurring [Member] \| Embedded Compound Derivative [Member]
Fair Value Assets Liabilities Quantitative Information [Line Items]
Derivative liability		11	11
Fair Value, Measurements, Recurring [Member] \| Level 3 [Member] \| Embedded Compound Derivative [Member]
Fair Value Assets Liabilities Quantitative Information [Line Items]
Derivative liability		11	11
2015 Bridge Notes [Member]
Fair Value Assets Liabilities Quantitative Information [Line Items]
Fair value of derivative liability		1,547	1,547
Loss upon the conversion Bridge Notes including the extinguishment of the embedded compound derivative	$ (1,170)	$ (1,170)	$ (1,170)
Debt instrument conversion percentage		100.00%	100.00%
Preferred Stock Warrants [Member]
Fair Value Assets Liabilities Quantitative Information [Line Items]
Warrant outstanding		0	0	14,544,247
Preferred Stock Warrants [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value Assets Liabilities Quantitative Information [Line Items]
Derivative liability				$ 1,309
Preferred Stock Warrants [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3 [Member]
Fair Value Assets Liabilities Quantitative Information [Line Items]
Derivative liability				$ 1,309