Guarantor/Non Guarantor Condensed Consolidating Financial Statements Narrative (Details)	Mar. 18, 2014
Senior Notes [Member] \| Senior Notes [Member]
Debt Instrument Domestic Subsidiaries That Secure Debt Obligations, Ownership Percentage	100.00%

Domestic Subsidiaries that Secure Debt Obligations, Ownership Percentage

No definition available.

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