Class Of Warrant Or Right, Warrant Term

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- Definition

Class of Warrant Or Right, Liquidated Damages Amount, Percent of Volume Weighted Average Price

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- Definition

Ownership Interest, Percentage of Voting Rights of Stock

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Preferred Stock, Stated Value Per Share

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- Definition

Stock Issued During Period, Shares, Debt Issuances

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

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

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- Definition

Number of warrants or rights outstanding.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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The cash inflow from the additional capital contribution to the entity.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Number of additional shares authorized for issuance under an established share-based compensation plan.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares of stock issued during the period pursuant to acquisitions.

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Number of new stock issued during the period.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 07, 2017	Jan. 27, 2017	Jun. 29, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Jun. 28, 2016	Oct. 12, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares authorized				10,000,000		10,000,000		10,000,000
Convertible preferred stock, par value (in dollars per share)				$ 0.001		$ 0.001		$ 0.001
Shares issued for acquisitions (in shares)	3,783,388
Shares issued for an investment (in shares)	1,666,666
Stock sold price per share (in dollars per share)	$ 4.80
Proceeds from issuance of common stock						$ 10,000	$ 70
Stock-based compensation expense				$ 226	$ 206	$ 855	560
Weighted average grant date fair value per option granted (in dollars per share)						$ 3.05		$ 4.05
Future stock-based compensation for unvested employee options granted and outstanding				1,400		$ 1,400
Stock options outstanding, intrinsic value				$ 0		$ 0
Liquidated damages amount percent of VWAP (percent)						1.00%
Warrants Issued in 2009 to Purchase Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants (in dollars per share)				$ 108.00		$ 108.00
Warrants outstanding (in shares)				1,851		1,851
Warrants term						10 years
Series D Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants (in dollars per share)			$ 8.75						$ 12.30
Warrants outstanding (in shares)										562,162
Liquidated damages amount percent of VWAP (percent)						1.00%
Warrants term			5 years
Warrants to Purchase Stock [Member] \| 2010 and 2012 Convertible Promissory Notes [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants (in dollars per share)				$ 24.35		$ 24.35
Warrants outstanding (in shares)				102,070		102,070
Warrants term						10 years
Underwriter [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants (in dollars per share)				$ 35.70		$ 35.70
Warrants outstanding (in shares)				16,500		16,500
Warrants term						10 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant				27,967		27,967
Percentage of outstanding stock maximum						1.00%
Additional shares authorized (in shares)						55,936
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ownership interest of voting rights of all classes of stock (percent)				10.00%		10.00%
NSO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value						85.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						4 years
Income tax benefit from stock compensation expense						$ 0	$ 0
Number of options granted (in shares)						622,755
Future stock-based compensation, requisite service period						2 years 8 months 12 days
Number of shares available for grant				1,621,585		1,621,585		191,771
Additional shares authorized (in shares)						134,295
Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value						110.00%
Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of option						10 years
ISOs [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term of option						5 years
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued upon conversion (in shares)				546,200				200,000
Series B Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares issued				10,049		10,049		12,780
Number of shares converted (in shares)				2,731				1,000
Convertible preferred stock, shares outstanding				10,049		10,049		12,780
Sabby Management, LLC [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ownership interest (percent)				4.99%		4.99%
2015 Sabby Purchase Agreement [Member] \| Series D Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants (in dollars per share)										$ 12.30
2016 Sabby Purchase Agreement [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion ratio						200
2016 Sabby Purchase Agreement [Member] \| Series D Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding (in shares)			540,540
2016 Sabby Purchase Agreement [Member] \| Series B Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock, shares issued				13,780		13,780
Convertible preferred stock, par value (in dollars per share)				$ 0.001		$ 0.001
Convertible preferred stock, stated value (in dollars per share)				$ 1,000		$ 1,000
Aspire Capital Fund, LLC [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock sold price per share (in dollars per share)	$ 4.80
Proceeds from issuance of common stock	$ 2,000	$ 2,000
Shares issued during period (in shares)	416,666	141,666
Maxim Group Llc [Member] \| 2016 Sabby Purchase Agreement [Member] \| Series D Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants (in dollars per share)			$ 8.75						$ 12.30
Warrants outstanding (in shares)			24,000							21,621
Warrants term			5 years
Essentialis, Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from issuance of common stock	$ 8,000
Indemnification Claims [Member] \| Essentialis, Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued for acquisitions (in shares)	182,675
Development Milestone [Member] \| Essentialis, Inc. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued for acquisitions (in shares)	913,389