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Activity Under Equity Incentive Plans Related to Stock Options (Detail) - 2008 Equity Incentive Plan shares in Thousands | 12 Months Ended
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Dec. 31, 2020 $ / shares shares
Activity under the Company's equity incentive plans related to stock options |
Number of Options Outstanding, Beginning Balance | shares | 16,830
Granted, Number of Options Outstanding | shares | 2,237
Exercised, Number of Options Outstanding | shares | (2,658)
Forfeited/canceled, Number of Options Outstanding | shares | (103)
Number of Options Outstanding, Ending Balance | shares | 16,306
Weighted Average Exercise Price per Share |
Weighted Average Exercise Price per Share, Beginning Balance | $ / shares | $ 4.53
Granted, Weighted Average Exercise Price per Share | $ / shares | 5.22
Exercised, Weighted Average Exercise Price per Share | $ / shares | 4.01
Forfeited/canceled, Weighted Average Exercise Price per Share | $ / shares | 5.27
Weighted Average Exercise Price per Share, Ending Balance | $ / shares | $ 4.71

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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. + References No definition available. + Details
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