Potential Shares, Excluded from Calculation of Weighted Average Number of Shares Outstanding used for Calculation of Diluted Net Loss Per Share (Detail) - shares shares in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
|
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Weighted average number of anti-dilutive potential shares | 24,225 | 20,588 | 23,227 | 20,248 |
Stock Options | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Weighted average number of anti-dilutive potential shares | 18,492 | 17,691 | 17,927 | 17,670 |
Restricted Stock Units | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Weighted average number of anti-dilutive potential shares | 5,704 | 2,897 | 5,223 | 2,578 |
Employee Stock Purchase Plan Rights | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Weighted average number of anti-dilutive potential shares | 29 | 77 |