Moratorium period of term loan.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Period of forgiveness of term loan.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- 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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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

Name:	us-gaap_LongTermDebtPercentageBearingFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cash inflow from issuance of long-term debt classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=pnrg_LoanUnderPaycheckProtectionProgrammeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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Balance Type:
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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=pnrg_CreditAgreementMember
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Data Type:	na
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- Details

Name:	us-gaap_CreditFacilityAxis=pnrg_TwoThousandSeventeenMember
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- Details

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Data Type:	na
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- Details

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Long-Term Debt - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	May 31, 2020	Dec. 31, 2017	Jun. 30, 2020	Dec. 18, 2019	Jun. 30, 2019	Jun. 26, 2019	Jan. 08, 2019	Jul. 17, 2018	Dec. 22, 2017	Feb. 15, 2017
Debt Instrument [Line Items]
Outstanding borrowings under revolving credit facility			$ 53,500
Weighted-average interest rate of borrowings			3.23%
Credit facility remaining borrowing capacity			$ 18,500
Loan Under Paycheck Protection Programme [Member] \| Eastern Oilwells Service Corporation [Member]
Debt Instrument [Line Items]
Proceeds from scheme based loan	$ 470
Loan Under Paycheck Protection Programme [Member] \| Prime Operating Company And Eastern Oilwells Company [Member]
Debt Instrument [Line Items]
Moratorium period of term loan	24 months
Long term debt stated rate of interest	1.00%
Loan Under Paycheck Protection Programme [Member] \| Prime Operating Company And Eastern Oilwells Company [Member] \| Possible Forgiveness Of Loan [Member]
Debt Instrument [Line Items]
Period Of Forgiveness Of Term Loan	10 months
Loan Under Paycheck Protection Programme [Member] \| Prime Operating Company [Member]
Debt Instrument [Line Items]
Proceeds from scheme based loan	$ 1,280
Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility borrowing base				$ 72,000		$ 90,000	$ 100,000
2017 Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility borrowing capacity										$ 300,000
Credit agreement date		Feb. 15, 2017
Credit facility borrowing base									$ 85,000
Line of Credit Facility, Expiration Date		Feb. 15, 2021
Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility borrowing base								$ 90,000
Base Rate And Libor [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Debt instrument basis weighted average interest rate spread on variable rate			4.22%		5.53%