Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (38,018)us-gaap_NetIncomeLoss	$ (35,932)us-gaap_NetIncomeLoss	$ 30,032us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	183,376	187,918	164,717
Allowance for doubtful accounts	1,445us-gaap_ProvisionForDoubtfulAccounts	801us-gaap_ProvisionForDoubtfulAccounts	76us-gaap_ProvisionForDoubtfulAccounts
Write-off of obsolete inventory	331us-gaap_InventoryWriteDown	152us-gaap_InventoryWriteDown	0us-gaap_InventoryWriteDown
Gain on dispositions of property and equipment	(1,729)	(1,421)	(1,199)
Stock-based compensation expense	7,617us-gaap_ShareBasedCompensation	6,371us-gaap_ShareBasedCompensation	7,319us-gaap_ShareBasedCompensation
Amortization of debt issuance costs, discount and premium	2,669	3,095	2,985
Gain on sale of fishing and rental services operations	(10,702)	0	0
Loss on extinguishment of debt	31,221	0	0
Impairment charges	73,025us-gaap_AssetImpairmentCharges	54,292us-gaap_AssetImpairmentCharges	1,131us-gaap_AssetImpairmentCharges
Deferred income taxes	(14,761)	(22,125)	13,303
Change in other long-term assets	2,958	(5,741)	(3,865)
Change in other long-term liabilities	(1,352)	(1,928)	(1,173)
Changes in current assets and liabilities:
Receivables	(11,993)	(16,168)	(12,807)
Inventory	(1,068)us-gaap_IncreaseDecreaseInInventories	(1,273)us-gaap_IncreaseDecreaseInInventories	(927)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets	(55)	3,729	(1,266)
Accounts payable	7,037	(166)	2,431
Deferred revenues	2,616	(3,181)	(86)
Accrued expenses	424	6,157	(1,305)
Net cash provided by operating activities	233,041	174,580	199,366
Cash flows from investing activities:
Purchases of property and equipment	(175,378)	(165,356)	(364,324)
Proceeds from sale of fishing and rental services operations	15,090	0	0
Proceeds from sale of property and equipment	8,370	13,836	3,093
Proceeds from insurance recoveries	0	844	0
Net cash used in investing activities	(151,918)	(150,676)	(361,231)
Cash flows from financing activities:
Debt repayments	(490,025)us-gaap_RepaymentsOfLongTermDebt	(60,874)us-gaap_RepaymentsOfLongTermDebt	(874)us-gaap_RepaymentsOfLongTermDebt
Proceeds from issuance of debt	440,000	40,000	100,000
Debt issuance costs	(9,239)us-gaap_PaymentsOfDebtIssuanceCosts	(13)us-gaap_PaymentsOfDebtIssuanceCosts	(58)us-gaap_PaymentsOfDebtIssuanceCosts
Tender premium costs	(21,553)	0	0
Proceeds from exercise of options	8,368	1,266	693
Purchase of treasury stock	(1,135)	(631)	(360)
Net cash provided by (used in) financing activities	(73,584)	(20,252)	99,401
Net increase (decrease) in cash and cash equivalents	7,539	3,652	(62,464)
Beginning cash and cash equivalents	27,385	23,733	86,197
Ending cash and cash equivalents	34,924	27,385	23,733
Supplementary disclosure:
Interest paid	43,690us-gaap_InterestPaid	46,274us-gaap_InterestPaid	44,317us-gaap_InterestPaid
Income tax paid	5,012us-gaap_IncomeTaxesPaidNet	3,154us-gaap_IncomeTaxesPaidNet	731us-gaap_IncomeTaxesPaidNet
Noncash investing and financing
Change in capital expenditure accruals	$ 12,743pes_Changeincapitalexpenditureaccruals	$ (39,936)pes_Changeincapitalexpenditureaccruals	$ 14,948pes_Changeincapitalexpenditureaccruals

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- Definition

The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to investments, for example fixed assets. It excludes insurance settlements classified as operating cash flows.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

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

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

+ Details

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

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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

- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.5)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 5

-Article 5

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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

- Details

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Balance Type:	na
Period Type:	duration