Shareholders' Equity - Summary of Nonvested Share Activity (Detail) - shares	12 Months Ended
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

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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
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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
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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
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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.

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- Definition

Number of non-option equity instruments exercised by participants.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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