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Shareholders' Equity - Summary of Nonvested Share Activity (Detail) - shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Awards vested, Number of Shares | (7,448,615) |
Supervisory Board [Member] | 2011 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Year of grant | 2011 |
Beginning Balance, Number of Shares | 7,500 | 45,000
Options granted | 172,500 |
Exercised | (7,500) | (37,500)
Ending Balance, Number of Shares |  | 7,500
Supervisory Board [Member] | 2012 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Year of grant | 2012 |
Beginning Balance, Number of Shares | 50,000 | 65,000
Options granted | 180,000 |
Exercised | (30,000) | (15,000)
Ending Balance, Number of Shares | 20,000 | 50,000
Employees [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Beginning Balance, Number of Shares | 15,288,056 |
Options granted | 6,556,475 |
Awards forfeited/waived, Number of Shares | (194,027) |
Awards vested, Number of Shares | (7,448,615) |
Ending Balance, Number of Shares | 14,201,889 | 15,288,056
Employees [Member] | Employee Plan 2018 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Beginning Balance, Number of Shares | 2,718,685 |
Awards forfeited/waived, Number of Shares | (8,235) |
Awards vested, Number of Shares | (2,710,450) |
Ending Balance, Number of Shares |  | 2,718,685
Employees [Member] | 2019 CEO Special Bonus [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Beginning Balance, Number of Shares | 23,306 |
Awards vested, Number of Shares | (11,654) |
Ending Balance, Number of Shares | 11,652 | 23,306
Employees [Member] | Employee Plan 2019 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Beginning Balance, Number of Shares | 4,575,120 |
Awards forfeited/waived, Number of Shares | (46,062) |
Awards vested, Number of Shares | (2,172,659) |
Ending Balance, Number of Shares | 2,356,399 | 4,575,120
Employees [Member] | 2020 CEO Special Bonus [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options granted | 16,000 |
Awards vested, Number of Shares | (5,333) |
Ending Balance, Number of Shares | 10,667 |
Employees [Member] | Employee Plan 2020 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Beginning Balance, Number of Shares | 7,970,945 |
Awards forfeited/waived, Number of Shares | (97,860) |
Awards vested, Number of Shares | (2,547,419) |
Ending Balance, Number of Shares | 5,325,666 | 7,970,945
Employees [Member] | Employee Plan 2021 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Options granted | 6,540,475 |
Awards forfeited/waived, Number of Shares | (41,870) |
Awards vested, Number of Shares | (1,100) |
Ending Balance, Number of Shares | 6,497,505 |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made 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 The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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