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Net Loss per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Summary of Reconciliation of Denominator Used in Calculation of Basic and Diluted Net Loss Per Share | A reconciliation of the denominator used in the calculation of basic and diluted net loss per share is as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  |  | 2017 |  |  |  | 2016 |  |  |  | 2017 |  |  |  | 2016 |
Net loss |  | $ | (10,583 | ) |  | $ | (10,515 | ) |  | $ | (28,179 | ) |  | $ | (31,733 | )
Weighted-average common shares outstanding — basic |  |  | 37,047 |  |  |  | 35,393 |  |  |  | 36,639 |  |  |  | 35,038 |
Dilutive effect of share equivalents resulting from stock options, RSUs, ESPP and the Conversion Option of the 2022 Notes |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Weighted-average common shares, outstanding — diluted |  |  | 37,047 |  |  |  | 35,393 |  |  |  | 36,639 |  |  |  | 35,038 |
Net loss per share, basic and diluted |  | $ | (0.29 | ) |  | $ | (0.30 | ) |  | $ | (0.77 | ) |  | $ | (0.91 | )
Schedule of Potentially Dilutive Common Stock Equivalents | The following table contains all potentially dilutive common stock equivalents.
|  | As of September 30, |
|  |  | 2017 |  |  |  | 2016 |
|  | (in thousands) |
Options to purchase common shares |  |  | 2,398 |  |  |  | 2,818 |
RSUs |  |  | 2,173 |  |  |  | 2,364 |
ESPP |  |  | 3 |  |  |  | 5 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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