Registration Statement, Amount Available for Equity or Debt Offerings

No definition available.

Name:	pes_RegistrationStatementAmountAvailableforEquityorDebtOfferings
Namespace Prefix:	pes_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Registration Statement, Stated Maximum Amount Available for Equity or Debt Offerings

+ References

No definition available.

+ Details

Name:	pes_RegistrationStatementStatedMaximumAmountAvailableForEquityOrDebtOfferings
Namespace Prefix:	pes_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sensitivity Analysis of Fair Value, Change in Compensation Cost Due to Change in Assumption, Impact of $1 Increase in Price of Common Stock

+ References

No definition available.

+ Details

Name:	pes_SensitivityAnalysisofFairValueChangeinCompensationCostDuetoChangeinAssumptionImpactof1IncreaseinPriceofCommonStock
Namespace Prefix:	pes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Basis for Determining Award on Market Factors, Percentage

+ References

No definition available.

+ Details

Name:	pes_ShareBasedCompensationArrangementByShareBasedPaymentAwardBasisForDeterminingAwardOnMarketFactorsPercentage
Namespace Prefix:	pes_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Estimated Achievement Level, Percentage

+ References

No definition available.

+ Details

Name:	pes_ShareBasedCompensationArrangementByShareBasedPaymentAwardEstimatedAchievementLevelPercentage
Namespace Prefix:	pes_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Share-based Compensation Arrangement by Share-based Payment Award Achieved Performance Adjustment, Number of Shares

+ References

No definition available.

+ Details

Name:	pes_SharebasedCompensationArrangementbySharebasedPaymentAwardAchievedPerformanceAdjustmentNumberofShares
Namespace Prefix:	pes_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Actual Achievement Level, Percentage

+ References

No definition available.

+ Details

Name:	pes_SharebasedCompensationArrangementbySharebasedPaymentAwardActualAchievementLevelPercentage
Namespace Prefix:	pes_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Performance Period

+ References

No definition available.

+ Details

Name:	pes_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardPerformancePeriod
Namespace Prefix:	pes_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Basis for Determining Award on Company Performance Factors, Percentage

+ References

No definition available.

+ Details

Name:	pes_SharebasedCompensationArrangementbySharebasedPaymentAwardBasisforDeterminingAwardonCompanyPerformanceFactorsPercentage
Namespace Prefix:	pes_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Cash Value of Phantom Stock Unit Awards Granted During the Period

+ References

No definition available.

+ Details

Name:	pes_SharebasedCompensationArrangementbySharebasedPaymentAwardMaximumCashValueofPhantomStockUnitAwards
Namespace Prefix:	pes_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the additional capital contribution to the entity.

+ 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 (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

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

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
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

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

- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ 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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Reference 4: 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_TimeBasedRsusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_PerformanceBasedRsusMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_PerformanceBasedRSUs2015Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_PerformanceBasedRSUs2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PhantomShareUnitsPSUsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_PerformancebasedphantomstockunitawardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_TimebasedphantomstockunitawardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_PhantomShareUnits2016Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=pes_PhantomStockUnits2018Member
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:

Equity Transactions and Stock-Based Compensation Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	May 22, 2018	Apr. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Registration Statement, Stated Maximum Amount Available for Equity or Debt Offerings				$ 300,000,000
Registration Statement, Amount Available for Equity or Debt Offerings	$ 300,000,000
Number of Shares Available for Grant	2,390,057
Share Price	$ 1.23
Proceeds from Issuance or Sale of Equity [Abstract]
Proceeds from common stock, net of offering costs	$ 0	$ 0	$ 65,430,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	3 years
Restricted Stock Units (RSUs) [Member] \| Time-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	3 years
Awards granted	788,377
Achieved Performance Adjustment, Number of Shares	0
Weighted average grant date awards granted, fair value	$ 3.85	$ 5.61	$ 1.47
Restricted Stock Units (RSUs) [Member] \| Performance-Based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	39 months
Awards granted	0
Award Performance Period	3 years
Basis for Determining Award on Individual Performance Factors Percentage	50.00%
Basis for Determining Award on Market Factors, Percentage	50.00%
Weighted average grant date awards granted, fair value	$ 0.00	7.75	0.00
Restricted Stock Units (RSUs) [Member] \| Performance-Based RSUs, 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Actual Achievement Level, Percentage					106.00%
Achieved Performance Adjustment, Number of Shares	25,807
Restricted Stock Units (RSUs) [Member] \| Performance-Based RSUs, 2015 and 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Estimated Achievement Level, Percentage	100.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	1 year
Awards granted	78,632
Weighted average grant date awards granted, fair value	$ 5.85	$ 2.75	$ 2.76
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	3 years
Award Expiration Period	10 years
Phantom Share Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	39 months
Award Performance Period	3 years
Sensitivity Analysis of Fair Value, Change in Compensation Cost Due to Change in Assumption, Impact of $1 Increase in Price of Common Stock	$ 400,000
Phantom Share Units (PSUs) [Member] \| Performance-based phantom stock unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	39 months
Phantom Share Units (PSUs) [Member] \| Time-based phantom stock unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award Vesting Period	3 years
Phantom Share Units (PSUs) [Member] \| Phantom Share Units, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted			1,268,068
Basis for Determining Award on Individual Performance Factors Percentage	50.00%
Basis for Determining Award on Market Factors, Percentage	50.00%
Share-based Payment Award, Estimated Achievement Level, Percentage	175.00%
Weighted average grant date awards granted, fair value			$ 1.35
Share-based Payment Award, Maximum Cash Value of Phantom Stock Unit Awards			$ 8.08
Phantom Share Units (PSUs) [Member] \| Phantom Stock Units, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted	1,188,216
Basis for Determining Award on Individual Performance Factors Percentage	50.00%
Basis for Determining Award on Market Factors, Percentage	50.00%
Share-based Payment Award, Estimated Achievement Level, Percentage	100.00%
Weighted average grant date awards granted, fair value	$ 3.06
Share-based Payment Award, Maximum Cash Value of Phantom Stock Unit Awards	$ 9.66
Common Stock [Member]
Proceeds from Issuance or Sale of Equity [Abstract]
Sale of common stock, net of offering costs, shares			12,075,000