Class of warrant or right number of warrants or rights issued.

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Class of warrants or rights issuance date.

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Fair value assumptions probabilities number of initial public offering scenario.

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Number of warrants expired unexercised.

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- Definition

Percentage of warrants exercisable upon new product announcement.

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No definition available.

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- Definition

Percentage of weighted value per share.

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Probability of exercisability percentage.

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- Definition

Reclassification of preferred stock warrant liability to equity.

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- Definition

Remeasured fair value of warrants.

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No definition available.

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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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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No definition available.

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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- Definition

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.

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

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

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- Definition

The cash inflow from issuance of callable preferred stock which is identified as being convertible to another type of financial security at the option of the issuer or the holder.

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The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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Preferred Stock Warrants - Additional Information (Detail)	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 31, 2016 IPO	Apr. 30, 2016 USD ($) shares	Aug. 31, 2013 $ / shares shares	Sep. 30, 2016 USD ($) shares	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) shares	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) shares	May 31, 2016 shares	Mar. 31, 2016 shares
Class of Warrant or Right [Line Items]
Redeemable convertible preferred stock, shares issued \| shares				0		0		77,185,117
Redeemable convertible preferred stock, shares outstanding \| shares				0		0		77,185,117
Proceeds from issuance of redeemable convertible preferred stock upon exercise of warrants \| $						$ 22,508,000	$ 17,362,000
Remeasured fair value of warrants \| $		$ 1,000,000
Reclassification of redeemable convertible preferred stock warrant liability to redeemable convertible preferred stock \| $						1,005,000
Change in fair value of redeemable convertible preferred stock warrant liability \| $				$ 0	$ (805,000)	525,000	$ (659,000)
Redeemable Convertible Preferred Stock Warrant Liability [Member]
Class of Warrant or Right [Line Items]
Reclassification of redeemable convertible preferred stock warrant liability to redeemable convertible preferred stock \| $						$ 1,000,000
Option Pricing Model [Member]
Class of Warrant or Right [Line Items]
Percentage of weighted value per share		67.00%
PWERM [Member]
Class of Warrant or Right [Line Items]
Percentage of weighted value per share		33.00%
Fair value assumptions probabilities, number of IPO scenarios \| IPO	3
First Tranche Warrants [Member]
Class of Warrant or Right [Line Items]
Number of convertible preferred stock issued upon exercise of stock warrants \| shares			2,000,000
Second Tranche Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants issued date						Aug. 15, 2014
Preferred Stock Warrant Liability [Member]
Class of Warrant or Right [Line Items]
Warrants outstanding, fair value \| $								$ 480,000
Risk-free interest rate		0.73%						0.90%
Expected life		2 years						1 year 7 months 6 days
Expected volatility		52.00%						57.00%
First Tranche Warrants [Member]
Class of Warrant or Right [Line Items]
Probability of exercisability percentage								95.00%
Second Tranche Warrants [Member]
Class of Warrant or Right [Line Items]
Probability of exercisability percentage								0.00%
Series B Redeemable Convertible Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Number of convertible preferred stock issued upon exercise of stock warrants \| shares			4,000,000
Warrants exercise price \| $ / shares			$ 0.01
Percentage of warrants exercisable upon new product announcement			50.00%
Redeemable convertible preferred stock, shares issued \| shares		1,999,998
Redeemable convertible preferred stock, shares outstanding \| shares										2,000,000
Proceeds from issuance of redeemable convertible preferred stock upon exercise of warrants \| $		$ 20,000
Number of redeemable convertible preferred stock expired unexercised \| shares									2,000,000