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Net Loss per Share (Tables) | 9 Months Ended
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Oct. 31, 2018
Earnings Per Share [Abstract] |
Schedule of basic and diluted earnings (loss) per share | The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data):
| Three Months Ended October 31, |  | Nine Months Ended October 31,
| 2018 |  | 2017 |  | 2018 |  | 2017
Numerator: |  |  |  |  |  |  |
Net loss | $ | (31,320 | ) |  | $ | (24,216 | ) |  | $ | (91,730 | ) |  | $ | (69,985 | )
Denominator: |  |  |  |  |  |  |
Weighted-average shares used to compute net loss per share, basic and diluted | 52,702,526 |  |  | 17,421,642 |  |  | 51,431,021 |  |  | 14,749,500 |
Net loss per share, basic and diluted | $ | (0.59 | ) |  | $ | (1.39 | ) |  | $ | (1.78 | ) |  | $ | (4.74 | )
Schedule of antidilutive securities excluded from computation of earnings per share | The following weighted-average outstanding potentially dilutive common shares were excluded from the computation of diluted net loss per share for the periods presented because the impact of including them would have been anti-dilutive.
| Three Months Ended October 31, |  | Nine Months Ended October 31,
| 2018 |  | 2017 |  | 2018 |  | 2017
Redeemable convertible preferred stock (as converted) | — |  |  | 24,316,192 |  |  | — |  |  | 26,045,352 |
Redeemable convertible preferred stock warrants (as converted) | — |  |  | 1,339 |  |  | — |  |  | 30,122 |
Common stock warrants | — |  |  | 116,485 |  |  | — |  |  | 120,190 |
Stock options to purchase Class A common stock | 3,046,631 |  |  | 3,258,405 |  |  | 3,315,885 |  |  | 2,207,524 |
Stock options to purchase Class B common stock | 7,137,570 |  |  | 9,321,627 |  |  | 8,136,949 |  |  | 9,783,945 |
Unvested restricted stock units | 1,707,692 |  |  | 54,550 |  |  | 1,265,391 |  |  | 54,550 |
Early exercised stock options | 94,026 |  |  | 318,240 |  |  | 146,248 |  |  | 236,231 |
Shares underlying the conversion spread in the convertible senior notes | 215,879 |  |  | — |  |  | 71,960 |  |  | — |

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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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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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