Exercise Price as Percentage of Fair Value of Common Stock

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Employee Stock Purchase Plan Each Offering Period

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No definition available.

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- Definition

Share based Compensation Arrangement by Share based Payment Award, Equivalent Number Of Shares For Full Value Awards

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No definition available.

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- Definition

Share based compensation arrangement by share based payment award fair value assumptions estimated forfeiture rate.

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No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
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- Definition

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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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

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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No definition available.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

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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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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 718
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-Paragraph 2
-Subparagraph (a)(3)
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- Definition

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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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
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-Topic 718
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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
-Subparagraph (a)(2)
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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
-Paragraph 2
-Subparagraph (c)
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- Definition

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

+ References

No definition available.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Name Accounting Standards Codification
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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Stock-Based Compensation - Additional Information (Detail) - USD ($)		1 Months Ended		6 Months Ended		12 Months Ended
	Jun. 28, 2013	Mar. 31, 2013	Feb. 28, 2010	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan, number of shares authorized to sell		7,875,000
Common stock reserved for issuance						8,500,000
Number of shares for each one share of common stock subject to full-value award		1.5
Shares available for future issuance under the Plan						3,413,353
Stock options issued to purchase common stock						4,796,005	5,817,313
Total unrecognized stock-based compensation expense related to stock options granted						$ 700,000
Shares of nonqualified common stock options granted to nonemployee consultants, average exercise price						$ 1.11
Stock-based compensation expense						$ 1,132,000	$ 2,808,000	$ 3,940,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards, vesting period						4 years
Awards, Expiration period						10 years
Share based payment award forfeiture rates						71.00%	62.00%	49.00%
Weighted-average grant date fair value of stock options granted						$ 0.75	$ 1.15	$ 4.32
Total unrecognized stock-based compensation expense, weighted-average period Recognition						2 years 10 months 24 days
Intrinsic value of options exercised						$ 58,000	$ 0
Stock Options \| Non Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of nonqualified common stock options granted to nonemployee consultants						0	225,000	0
Shares of nonqualified common stock options granted to nonemployee consultants, average exercise price							$ 1.47
Stock-based compensation expense							$ 100,000
Awards With Market Conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options issued to purchase common stock						381,500	2,250,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized stock-based compensation expense, weighted-average period Recognition						1 month 6 days
Fair value of restricted stock awards vested						$ 100,000	$ 200,000	$ 500,000
Total unrecognized stock-based compensation expense						6,000
Employee Stock Purchase Plan, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan, number of shares authorized to sell		764,000	250,000		250,000			1,000,000
Stock-based compensation expense						$ 27,000	$ 200,000	$ 200,000
Common stock price per share percentage as of lower of fair market value of the common stock	85.00%		85.00%	85.00%	85.00%	85.00%	85.00%	85.00%
employee stock purchase plan, each offering period		6 months
Employee stock purchase plan, number of share sold						7,138	139,032	109,610
Price per share of shares sold to employees	$ 2.13			$ 0.75	$ 1.53	$ 1.07	$ 0.71	$ 1.56
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance		625,000
Stock-based award per share purchase price percentage to fair market value		100.00%
Minimum \| Stock Options \| Participants Who Own Less than 10% of Total Combined Voting Power
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of incentive stock options as percentage of fair market value of common stock on the date of the award						100.00%
Minimum \| Stock Options \| Participants Who Own More than 10% of Total Combined Voting Power
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of incentive stock options as percentage of fair market value of common stock on the date of the award						110.00%