Debt Conversion, Original Debt, Percent Of Total

No definition available.

Name:	pq_DebtConversionOriginalDebtPercentOfTotal
Namespace Prefix:	pq_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Excess (Shortfall) Carrying Value

+ References

No definition available.

+ Details

Name:	pq_DebtInstrumentExcessShortfallCarryingValue
Namespace Prefix:	pq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Number Of Interest Payments With Variable Rate

+ References

No definition available.

+ Details

Name:	pq_DebtInstrumentNumberOfInterestPaymentsWithVariableRate
Namespace Prefix:	pq_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Borrowing Availability Period

+ References

No definition available.

+ Details

Name:	pq_LineOfCreditFacilityBorrowingAvailabilityPeriod
Namespace Prefix:	pq_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Covenant Compliance, Present Value Of Estimated Future Net Revenues, Discount Percent

+ References

No definition available.

+ Details

Name:	pq_LineOfCreditFacilityCovenantCompliancePresentValueOfEstimatedFutureNetRevenuesDiscountPercent
Namespace Prefix:	pq_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line Of Credit Facility, Covenant Compliance, Ratio Of Present Value Of Estimated Future Net Revenues To Sum Of Outstanding Term Loans And Commitments

+ References

No definition available.

+ Details

Name:	pq_LineOfCreditFacilityCovenantComplianceRatioOfPresentValueOfEstimatedFutureNetRevenuesToSumOfOutstandingTermLoansAndCommitments
Namespace Prefix:	pq_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Line Of Credit Facility, First Priority Lien As Percent Of Total Value Of Oil And Gas Properties

+ References

No definition available.

+ Details

Name:	pq_LineOfCreditFacilityFirstPriorityLienAsPercentOfTotalValueOfOilAndGasProperties
Namespace Prefix:	pq_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(8))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(8))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

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

- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

+ Details

Name:	us-gaap_DebtConversionOriginalDebtAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
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

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=pq_A10PercentSeniorSecuredNotesDue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=pq_A10PercentSeniorUnsecuredNotesDue2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=pq_MultidrawTermLoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=pq_A10PercentSecuredPIKNotesDue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtConversionByUniqueDescriptionAxis=pq_PrivateExchangeOfferAndConsentSolicitationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtConversionByUniqueDescriptionAxis=pq_SeptemberExchangeAndConsentSolicitationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=pq_PIKInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=pq_TermLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pq_LoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long-Term Debt - Narrative (Details) shares in Millions					1 Months Ended	3 Months Ended
Long-Term Debt - Narrative (Details) shares in Millions	Dec. 28, 2017 USD ($) shares	Oct. 17, 2016 USD ($)	Sep. 27, 2016 USD ($) payment shares	Feb. 17, 2016 USD ($) shares	Dec. 31, 2017 USD ($) shares	Mar. 31, 2018 USD ($)	Jul. 03, 2013 USD ($)	Aug. 19, 2010 USD ($)
Debt Instrument [Line Items]
Principal amount					$ 272,629,000	$ 284,473,000
10% Senior Secured Notes due 2021
Debt Instrument [Line Items]
Shares issued (in shares) \| shares	2.2				2.2
Extinguishment of debt, amount	$ 4,800,000
Senior Notes \| 10% Senior Unsecured Notes due 2017
Debt Instrument [Line Items]
Principal amount							$ 200,000,000	$ 150,000,000
Stated interest rate							10.00%	10.00%
Long-term debt				$ 135,600,000
Senior Notes \| 10% Senior Secured Notes due 2021
Debt Instrument [Line Items]
Principal amount					$ 9,427,000	$ 9,427,000
Stated interest rate					10.00%	10.00%
Long-term debt					$ 9,821,000	$ 9,788,000
Excess (shortfall) carrying value					606,000	562,000
Deferred finance costs, net					(212,000)	(201,000)
Line of Credit \| Multidraw Term Loan Agreement
Debt Instrument [Line Items]
Remaining borrowing capacity						20,000,000
Payment in Kind (PIK) Note \| 10% Senior Secured PIK Notes due 2021
Debt Instrument [Line Items]
Principal amount					$ 263,202,000	$ 275,046,000
Stated interest rate					10.00%	10.00%
Long-term debt					$ 271,577,000	$ 274,563,000
Excess (shortfall) carrying value					(508,000)	(483,000)
Deferred finance costs, net					0	$ 0
Private Exchange Offer and Consent Solicitation
Debt Instrument [Line Items]
Repayments of debt				53,600,000
Private Exchange Offer and Consent Solicitation \| Senior Notes \| 10% Senior Unsecured Notes due 2017
Debt Instrument [Line Items]
Debt conversion, original debt, amount				$ 214,400,000
Debt conversion, original debt, percent of total				61.00%
Gain on extinguishment of debt				$ 0
Private Exchange Offer and Consent Solicitation \| Senior Notes \| 10% Senior Secured Notes due 2021
Debt Instrument [Line Items]
Stated interest rate				10.00%		10.00%
Debt conversion, amount				$ 144,700,000
Excess (shortfall) carrying value				$ 13,900,000
Amortization of financing costs						$ 0
Private Exchange Offer and Consent Solicitation \| Payment in Kind (PIK) Note \| 10% Senior Secured PIK Notes due 2021
Debt Instrument [Line Items]
Stated interest rate						10.00%
Excess (shortfall) carrying value			$ (600,000)			$ (500,000)
Amortization of financing costs						0
September Exchange and Consent Solicitation \| Senior Notes \| 10% Senior Unsecured Notes due 2017
Debt Instrument [Line Items]
Debt conversion, original debt, amount			$ 113,000,000
Debt conversion, original debt, percent of total			83.00%
Long-term debt			$ 22,700,000
Repayments of debt						22,800,000
Gain on extinguishment of debt			0
September Exchange and Consent Solicitation \| Senior Notes \| 10% Senior Secured Notes due 2021
Debt Instrument [Line Items]
Debt conversion, original debt, amount			$ 130,500,000
Debt conversion, original debt, percent of total			90.00%
Long-term debt			$ 14,200,000
September Exchange and Consent Solicitation \| Payment in Kind (PIK) Note \| 10% Senior Secured PIK Notes due 2021
Debt Instrument [Line Items]
Debt conversion, amount			$ 243,500,000
Number of interest payments with variable rate \| payment			3
Common Stock \| Private Exchange Offer and Consent Solicitation
Debt Instrument [Line Items]
Debt conversion, shares issued \| shares			3.5	1.1
PIK Interest \| September Exchange and Consent Solicitation \| Payment in Kind (PIK) Note \| 10% Senior Secured PIK Notes due 2021
Debt Instrument [Line Items]
Stated interest rate			1.00%
Basis spread on variable rate			9.00%
Term Loan \| Line of Credit
Debt Instrument [Line Items]
Principal amount					30,000,000	30,000,000
Long-term debt					27,963,000	28,131,000
Excess (shortfall) carrying value					0	0
Deferred finance costs, net					$ (2,037,000)	(1,869,000)
Term Loan \| Line of Credit \| Loan Agreement
Debt Instrument [Line Items]
Stated interest rate		10.00%
Long-term debt						$ 30,000,000
First priority lien as percent of total value of oil and gas properties		90.00%
Borrowing availability period		3 years
Maximum borrowing capacity		$ 50,000,000
Covenant compliance, present value of estimated future net revenues, discount percent		10.00%
Covenant compliance, ratio of present value of estimated future net revenues to sum of outstanding term loans and commitments						2