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Related Parties - Changes of Number of Shares Granted (Detail) - Deferred stock plan [member] - Management - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share granted, beginning	702,260	1,224,524
Cancellation of granted shares due to termination of executive employment		(200,000)
Shares vested and transferred	(448,930)	(322,264)
Reclassification to assets held for sale	(119,998)
Share granted, ending	133,332	702,260

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

The number of other equity instruments (ie other than share options) exercised or vested in a share-based payment arrangement.

+ References

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-Number 2
-IssueDate 2021-01-01
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The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

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-IssueDate 2021-01-01
-Paragraph 45
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The number of other equity instruments (ie other than share options) reclassified to held for sale in a share-based payment arrangement.

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