Aggregate number of common shares reserved for future issuance.

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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).

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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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 and are expected to vest over a specific period.

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Future Forfeiture, Percentage

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No definition available.

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Share-based compensation - 2020 Plan (Detail) - USD ($)	1 Months Ended	12 Months Ended
Share-based compensation - 2020 Plan (Detail) - USD ($)	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 31, 2015	Nov. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for future issuance					10,991,120	10,000,000
Number of shares repurchased under repurchase programs	9,667,230
Tranche One [Member] \| Restricted Shares With 2 Years Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares expected to vest		15,059,340
2010 share incentive plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs on restricted shares		$ 18,147,328
2010 share incentive plan [Member] \| Restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted				800,000
Number of restricted share vested		400,000	965,500	1,296,540
Unrecognized compensation costs on restricted shares		$ 1,031,340	$ 2,000,000
2010 share incentive plan [Member] \| Tranche Two [Member] \| Restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares expected to vest		330,000
2010 share incentive plan [Member] \| Tranche Three [Member] \| Restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares expected to vest		320,000
2010 share incentive plan [Member] \| Certain Officers and Employees [Member] \| Restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future forfeitures rate		15.00%
Existing Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for future issuance	21,039,742
2020 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant	31,000,000	2,685,660
Common shares reserved for future issuance	293,028
Future forfeitures rate		25.00%
Unrecognized compensation costs on restricted shares			$ 0
2020 Incentive Plan \| Restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted		31,091,840
Number of restricted share vested		2,429,965
2020 Incentive Plan \| Tranche Two [Member] \| Restricted Shares With 2 Years Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		2 years
2020 Incentive Plan \| Tranche Two [Member] \| Restricted Shares With 3 Years Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted share vested		30,000
Restricted shares expected to vest		90,000
2020 Incentive Plan \| Tranche Three [Member] \| Restricted Shares With 3 Years Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
2020 Incentive Plan \| Tranche Three [Member] \| Restricted Shares With 3 Years Vesting Period And Vesting On Second and Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted share vested		2,299,965
Restricted shares expected to vest		12,665,000
2020 Incentive Plan \| Tranche Four [Member] \| Restricted Shares With 3 Years Vesting Period And Vesting On Second and Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
2020 Incentive Plan \| Tranche Five [Member] \| Restricted Shares With 5 Years Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted share vested		100,000
Restricted shares expected to vest		500,000
Vesting period		5 years