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Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Net (Loss) Income Per Share [Abstract]
Computation of Basic and Diluted Net Income (Loss) per Share	Years Ended December 31, 2021 2020 2019Numerator: Net (loss) income$ (181,223) $ 29,403 $ (84,134) Denominator: Basic Weighted average shares used in computing basic net income (loss) per share 204,136 165,187 152,527Basic net (loss) income per share$ (0.89) $ 0.18 $ (0.55)Diluted Weighted average shares used in computing basic net (loss) income per share 204,136 165,187 152,527Add: weighted average stock options — 6,092 —Add: weighted average restricted stock units — 2,324 —Add: weighted average common stock issuable pursuant to our ESPP — 1,367 —Weighted average shares used in computing diluted net (loss) income per share 204,136 174,970 152,527Diluted net (loss) income per share$ (0.89) $ 0.17 $ (0.55)
Antidilutive Shares Excluded from Computation of Diluted Net Loss per Share	Years Ended December 31,(in thousands)2021 2020 2019Shares issuable upon conversion of convertible senior notes 18,026 — —Options to purchase common stock 12,463 4,908 22,697RSUs with time-based vesting 7,392 100 1,086RSUs with performance-based vesting — 94 138ESPP shares 1,564 2,890 —

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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=124432515&loc=d3e3550-109257

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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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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