Fair Value Measurements - Summary of Quantitative Information for Significant Warrant (Detail)		12 Months Ended
Jun. 18, 2015	Dec. 31, 2014
Input Ranges [Line Items]
Discount for lack of marketability	5.00%	11.00%
Discount rate	19.00%	17.00%
Minimum
Input Ranges [Line Items]
Time to liquidity (years)	0 years	6 months
Maximum
Input Ranges [Line Items]
Time to liquidity (years)	7 months 13 days	1 year 1 month 28 days
IPO
Input Ranges [Line Items]
Probability of liquidity event	95.00%	75.00%
Transaction
Input Ranges [Line Items]
Probability of liquidity event	0.00%	20.00%
Staying Private
Input Ranges [Line Items]
Probability of liquidity event	5.00%	5.00%

Percentage of likelihood a liquidity even, used as an input to measure fair value, will occur.

No definition available.

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- Definition

Input ranges.

+ References

No definition available.

+ Details

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- Definition

Time to liquidity.

+ References

No definition available.

+ Details

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- Definition

Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly.

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

+ Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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