Price per share or per unit of warrants or rights outstanding.

No definition available.

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

- 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.

+ References

No definition available.

+ Details

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

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

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

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

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

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

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

- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Details

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

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=pnst_PrivatePlacementWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

UNAUDITED PRIVATE PLACEMENT (Details) - USD ($)		9 Months Ended	12 Months Ended
UNAUDITED PRIVATE PLACEMENT (Details) - USD ($)	Jan. 24, 2022	Sep. 30, 2022	Apr. 30, 2023	Dec. 31, 2022	Apr. 24, 2022	Apr. 25, 2021	Oct. 15, 2023	Apr. 26, 2020
PRIVATE PLACEMENT
Aggregate purchase price			$ 3,758,000		$ 56,000	$ 0
Exercise price of warrant			$ 1.31		$ 4.49	$ 3.45	$ 1.19	$ 3.45
BANYAN ACQUISITION CORPORATION
PRIVATE PLACEMENT
Aggregate purchase price		$ 11,910,000		$ 11,910,000
Number of shares per warrant	1
BANYAN ACQUISITION CORPORATION \| Private Placement \| Private Placement Warrants
PRIVATE PLACEMENT
Number of warrants to purchase shares issued	11,910,000
Price of warrants	$ 1.00
Aggregate purchase price	$ 11,910,000
Number of shares per warrant	1
Exercise price of warrant	$ 11.50