v3.6.0.2

Stock-Based Compensation (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 5 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 29, 2016 shares | Jun. 30, 2015 shares | Apr. 30, 2016 USD ($) shares | Oct. 31, 2016 USD ($) shares | Dec. 31, 2016 USD ($) $ / shares period shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($)
Stock Based Compensation |  |  |  |  |  |  |
Proceeds from issuance of common stock under employee stock purchase plan | $ |  |  |  |  | $ 2,589 |  |
2015 Plan |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares reserved for issuance |  | 3,451,495 |  |  | 13,094,869 |  |
Shares reserved for issuance as a proportion common stock outstanding (as a percent) |  |  |  |  | 4.00% |  |
2015 Plan | Minimum |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares reserved for issuance |  |  |  |  | 3,500,000 |  |
2007 Plan |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares reserved for issuance |  |  |  |  | 7,713,510 |  |
Employee stock purchase plan |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares reserved for issuance |  | 893,548 |  |  | 1,056,344 |  |
Shares reserved for issuance as a proportion common stock outstanding (as a percent) |  |  |  |  | 1.00% |  |
Price in relation to fair market value of common stock on the date of grant, lower range limit (as a percent) |  |  |  |  | 85.00% |  |
Maximum offering period, term |  |  |  |  | 27 months |  |
Number of expected offering periods each year | period |  |  |  |  | 2 |  |
Offering period, expected term |  |  |  |  | 6 months |  |
Issuance of common stock under employee stock purchase plan (in shares) |  |  | 116,215 | 224,637 |  |  |
Proceeds from issuance of common stock under employee stock purchase plan | $ |  |  | $ 1,000 | $ 1,600 |  |  |
Employee stock purchase plan | Minimum |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares reserved for issuance |  |  |  |  | 880,000 |  |
Employee and non-employee stock options |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Stock based compensation expense | $ |  |  |  |  | $ 10,601 | $ 7,326 | $ 5,157
Shares available for issuance |  |  |  |  | 4,115,000 | 3,743,000 |
Employee and non-employee stock options | 2015 Plan |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |
Expiration period |  | 10 years |  |  |  |  |
Employee and non-employee stock options | 2007 Plan |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |
Expiration period |  |  |  |  | 10 years |  |
Stock options, exercise price range, number outstanding (in shares) |  |  |  |  | 6,098,564 |  |
Stock options, exercise price range, lower range limit (in dollars per share) | $ / shares |  |  |  |  | $ 0.0978 |  |
Stock options, exercise price range, upper range limit (in dollars per share) | $ / shares |  |  |  |  | 12.8501 |  |
Stock options, exercise price range, weighted-average exercise price (in dollars per share) | $ / shares |  |  |  |  | $ 2.71 |  |
Shares exercised and unvested |  |  |  |  |  | 1,300,000 |
Period after Market Stand-off repurchase right expires |  |  |  |  |  | 210 days |
Accelerated stock-based compensation expense | $ |  |  |  |  |  | $ 1,300 |
Stock appreciation rights | 2015 Plan |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Vesting period |  |  |  |  | 4 years |  |
Expiration period |  |  |  |  | 10 years |  |
Restricted shares | Non-employee service provider |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares granted | 24,540 |  |  |  |  |  |
Restricted stock units |  |  |  |  |  |  |
Stock Based Compensation |  |  |  |  |  |  |
Shares granted |  |  |  |  | 212,000 |  |

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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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