v3.6.0.2

Fair Value Measurements - Assumptions (Detail)		12 Months Ended
	Sep. 26, 2016	Dec. 31, 2015	Dec. 31, 2014
Series Seed preferred stock warrants
Fair Value of preferred stock warrants
Expected term (years)	4 years 10 months 24 days	5 years 8 months 12 days	6 years 8 months 12 days
Expected volatility	59.10%	60.30%	53.90%
Risk-free interest rate	1.12%	1.84%	1.97%
Estimated dividend yield	0.00%	0.00%	0.00%
Series A-3 preferred stock warrants
Fair Value of preferred stock warrants
Expected term (years)	6 years 6 months	7 years 2 months 12 days	8 years 2 months 12 days
Expected volatility	59.10%	61.30%	54.10%
Risk-free interest rate	1.34%	2.09%	2.07%
Estimated dividend yield	0.00%	0.00%	0.00%

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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ 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=66048111&loc=d3e19207-110258

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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=66048111&loc=d3e19207-110258

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ 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=66048111&loc=d3e19207-110258

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Risk-free interest rate assumption used in valuing an instrument.

+ 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=66048111&loc=d3e19207-110258

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