Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
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Notes Details

Stock-based compensation (Details)

v2.4.1.9

Stock-based compensation (Details) (Employee Stock Option [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Employee Stock Option [Member]
Number of shares available for grant
Shares available for future grant, beginning balance	32,863,000
Number of shares, Granted	1,750,000
Number of shares, Cancelled	44,000
Shares available for future grant, ending balance	31,157,000
Option activity
Number of shares, Outstanding beginning balance	19,600,000
Number of shares, Exercised	162,000
Number of shares, Granted	1,750,000
Number of shares, Cancelled	44,000
Number of shares, Outstanding ending balance	21,144,000
Weighted average exercise price, Outstanding beginning balance	$ 0.10
Weighted average exercise price, Exercised	$ 0.12
Weighted average exercise price, Granted	$ 1.02
Weighted average exercise price, Cancelled	$ 0.11
Weighted average exercise price, Outstanding ending balance	$ 0.18
Aggregate intrinsic value, Outstanding beginning balance	$ 26,656,000
Aggregate intrinsic value, Exercised	217,000
Aggregate intrinsic value, Granted	779,000
Aggregate intrinsic value, Cancelled	59,000
Aggregate intrinsic value, Outstanding ending balance	$ 27,159,000

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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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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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