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Summary of General Terms of Stock-Based Compensation Plans for Awards Granted (Detail) | 12 Months Ended
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Dec. 31, 2021 $ / shares shares
2004 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted awards | shares | 1,575,037 | [1]
Vesting schedule | immediately upon granting to four years |
2004 Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options' exercise price | $ 3.95 |
2004 Plan | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options' exercise price | $ 12.75 |
2006 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted awards | shares | 256,716 | [2]
Vesting schedule | immediately upon granting to four years |
2006 Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options' exercise price | $ 3.85 |
2006 Plan | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options' exercise price | 83 |
2006 Plan | Restricted Stock Units (RSUs) | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
RSUs' grant date fair value | 14.55 |
2006 Plan | Restricted Stock Units (RSUs) | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
RSUs' grant date fair value | $ 80.05 |
2007 Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted awards | shares | 675,057 | [3]
Vesting schedule | immediately upon granting to four years |
2007 Plan | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options' exercise price | $ 2.90 |
2007 Plan | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options' exercise price | 90.85 |
2007 Plan | Restricted Stock Units (RSUs) | Minimum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
RSUs' grant date fair value | 12.35 |
2007 Plan | Restricted Stock Units (RSUs) | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
RSUs' grant date fair value | $ 76.75 |
[1] | The granted awards, net of forfeited or canceled options, were within reserved shares of 1,400 thousand common shares.
[2] | The granted awards, net of forfeited or canceled options or shares, were within reserved shares of 200 thousand common shares.
[3] | The granted awards, net of forfeited or canceled options or shares, were within reserved shares of 400 thousand common shares.

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- Definition Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Net number of share options (or share units) granted during the period. + 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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