Name:	pnst_ClassOfWarrantOrRightAdjustmentOfExercisePriceOfWarrantsOrRightsPercentBasedOnMarketValue
Namespace Prefix:	pnst_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

Represents the percentage of adjustment of redemption price of stock based on market value.

No definition available.

Name:	pnst_ClassOfWarrantOrRightAdjustmentOfRedemptionPriceOfWarrantsOrRightsPercentBasedOnMarketValue
Namespace Prefix:	pnst_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

The minimum threshold period during which a written notice is required for redemption of warrants, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_ClassOfWarrantOrRightMinimumThresholdWrittenNoticePeriodForRedemptionOfWarrants
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The per share amount of entity's common stock which would be required to be attained to trigger the redemption of warrants.

No definition available.

Name:	pnst_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsReferencePrice
Namespace Prefix:	pnst_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	instant

The number of specified consecutive trading days for stock price trigger considered for redemption of warrants.

No definition available.

Name:	pnst_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdConsecutiveTradingDays
Namespace Prefix:	pnst_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Threshold number of specified trading days for stock price trigger considered for redemption of warrants in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdTradingDays
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Threshold number of trading days before sending notice of redemption to warrant holders in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_ClassOfWarrantOrRightRedemptionOfWarrantsOrRightsThresholdTradingDaysBeforeSendingNoticeOfRedemptionOfWarrants
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The per share amount of warrants or rights outstanding.

No definition available.

Name:	pnst_ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights
Namespace Prefix:	pnst_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Represents the percentage of gross proceeds on total equity proceeds.

No definition available.

Name:	pnst_PercentageOfGrossProceedsOnTotalEquityProceeds
Namespace Prefix:	pnst_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	instant

The per share amount of threshold Issue price for capital raising purposes in connection with closing of business combination.

No definition available.

Name:	pnst_ThresholdIssuePriceForCapitalRaisingPurposesInConnectionWithClosingOfBusinessCombination
Namespace Prefix:	pnst_
Data Type:	dtr-types1:perShareItemType
Balance Type:	na
Period Type:	duration

Represents the threshold period for filling registration statement after business combination in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_ThresholdPeriodForFillingRegistrationStatementAfterBusinessCombination
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the threshold period for filling registration statement within number of days of business combination in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_ThresholdPeriodForFillingRegistrationStatementWithinNumberOfDaysOfBusinessCombination
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The period of time which must elapse after completion of a business combination before the Sponsor can transfer, assign or sell any Founder Shares unless other specified conditions are met in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_ThresholdPeriodForNotToTransferAssignOrSellAnySharesOrWarrantsAfterCompletionOfInitialBusinessCombination
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Threshold trading days for calculating volume weighted average trading price.

No definition available.

Name:	pnst_ThresholdTradingDaysForCalculatingVolumeWeightedAverageTradingPrice
Namespace Prefix:	pnst_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

It represents of warrant liability.

No definition available.

Name:	pnst_WarrantLiabilityLineItems
Namespace Prefix:	pnst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the warrants exercisable term from the closing of the business combination.

No definition available.

Name:	pnst_WarrantsAndRightsOutstandingExercisableTermFromClosingOfBusinessCombination
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the warrants exercisable term from the closing of the public offering in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pnst_WarrantsAndRightsOutstandingExercisableTermFromClosingOfPublicOffering
Namespace Prefix:	pnst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number of warrants or rights outstanding.

No definition available.

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Price of a single share of a number of saleable stocks of a company.

No definition available.

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Name:	dei_LegalEntityAxis=pnst_BANYANACQUISITIONCORPORATIONMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsidiarySaleOfStockAxis=pnst_PublicWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_StatementScenarioAxis=pnst_RedemptionOfWarrantsWhenPricePerShareOfClassCommonStockEqualsOrExceeds18.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ClassOfWarrantOrRightAxis=pnst_RedemptionOfWarrantPricePerShareEqualsOrExceeds10.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ClassOfWarrantOrRightAxis=pnst_RedemptionOfWarrantPricePerShareLessThan18.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsidiarySaleOfStockAxis=pnst_PrivateWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: