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Period Type:	instant

Debt Instrument, Redeemable with Equity Issuance Proceeds, Required Repurchase Due to Change in Control Redemption Price, Percentage

No definition available.

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Balance Type:	na
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Debt Instrument Stated Percentage of Outstanding Non-Voting Equity Interests of First Tier Foreign Subsidiaries That Secure Debt Obligations

No definition available.

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Data Type:	num:percentItemType
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Period Type:	instant

Debt Instrument, Stated Percentage of Outstanding Equity Interests of First Tier Foreign Subsidiaries That Secure Debt Obligations

No definition available.

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Line of Credit, Additional Capital Expenditures Covenant, Pro Forma Senior Leverage Ratio, Maximum

No definition available.

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Balance Type:	na
Period Type:	instant

Line of Credit, Additional Capital Expenditures Covenant, Pro Forma Total Leverage Ratio, Maximum

No definition available.

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Line of Credit Facility, Additional Capital Expenditures Covenant, Maximum Amount Outstanding, Threshold

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line of Credit Facility, Capital Expenditure Limitation, Maximum

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Line of Credit Facility, Capital Expenditure Limitation, Maximum Amount Unused from Prior Fiscal Year Available to Increase Current Year Capital Expenditure, Threshold

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Line of Credit Facility, Capital Expenditure Limitation, Maximum Capital Expenditure for Current Year, Threshold

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Line of Credit Facility, Capital Expenditure Limitation, Percentage Unused from Prior Year Available to Increase Current Year Expenditure, Threshold

No definition available.

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Line of Credit Facility, Covenant, Cash Threshold for Mandatory Repayment of Revolving Credit Facility

No definition available.

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Period Type:	instant

Line of Credit Facility, Covenant, Maximum Senior Ratio of Indebtedness to Defined Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA)

No definition available.

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Line of Credit Facility, Covenant, Minimum Ratio of Interest Coverage to Defined Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA)

No definition available.

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Line of Credit Facility, Covenant, Minimum Requirement for Defined Earnings Before Interest, Taxes, Depreciation and Amortization (EBITDA)

No definition available.

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Namespace Prefix:	pes_
Data Type:	xbrli:monetaryItemType
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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

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

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

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

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.

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(22))
-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 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: 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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

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Period Type:	duration

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.

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

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

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

- References

No definition available.

Name:	us-gaap_SeniorLongtermNotesCurrentAndNoncurrentAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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Balance Type:
Period Type:

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Balance Type:
Period Type:

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

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Data Type:	na
Balance Type:
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Name:	us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
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Data Type:	na
Balance Type:
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