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Interest rate of surety bonds issued.

No definition available.

Name:	ppta_SuretyBondInterestRatePercentage
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Data Type:	dtr-types:percentItemType
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Period Type:	instant

Amount of standby letter of credit issued as a collateral for surety bond by the bank.

No definition available.

Name:	ppta_SuretyBondLetterOfCreditIssuedAsCollateral
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Notice period of surety bond, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	ppta_SuretyBondNoticePeriod
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Data Type:	xbrli:durationItemType
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Period Type:	duration

Amount of surety bond receivable at the time of issuance.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Amount of assets pledged to secure a debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Period Type:	instant

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Period Type:	instant

Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
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