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The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 51
-Subparagraph a
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The amount of expense from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45&doctype=Standard
-URIDate 2022-03-24

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The decrease in equity resulting from the purchase of treasury shares. [Refer: Treasury shares]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 106
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_106_d&doctype=Standard
-URIDate 2022-03-24

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The number of shares reserved for issue under options and contracts for the sale of shares.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 79
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-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_79_a_vii&doctype=Standard
-URIDate 2022-03-24

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The weighted average exercise price of other equity instruments (ie other than share options) granted in a share-based payment arrangement. [Refer: Weighted average [member]]

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The amount of accrued labor charges on share-based payment arrangements.

No definition available.

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The expected volatility of the share price used to calculate the fair value of the other equity instruments (ie other than share options). Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time.

No definition available.

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The amount of expense arising from performance based restricted share units exercised in share-based payment arrangements.

No definition available.

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The increase (decrease) in equity resulting from the exercise of performance based restricted share units, net of withholding taxes.

No definition available.

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The increase in the number of ordinary shares issued through premium recognized.

No definition available.

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The maximum number of tranches authorized for issuance of shares by the reporting entity.

No definition available.

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The maximum percentage of shares authorized for issuance to employees.

No definition available.

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The maximum percentage of shares authorized for issuance to employees.

No definition available.

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The number of bonus plans issued by the reporting entity.

No definition available.

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The number of share-based compensation plans issued by the reporting entity.

No definition available.

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The number of shres authorized for repurchase program.

No definition available.

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Data Type:	xbrli:sharesItemType
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The number of tranches granted under share-based plan.

No definition available.

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Data Type:	xbrli:integerItemType
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The period of continued employment under service conditions in share-based payment arrangements.

No definition available.

Name:	vsta_PeriodOfContinuedEmploymentUnderServiceConditions
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The number of treasury shares purchased for repurchase program.

No definition available.

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Represneta the vesting period under share based payment arrangement.

No definition available.

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