Number of insurance carriers.

No definition available.

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Namespace Prefix:	pke_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of insurance carriers that have filed answers to the lawsuit.

+ References

No definition available.

+ Details

Name:	pke_NumberOfInsuranceCarriersThatHaveFiledAnswersToLawsuit
Namespace Prefix:	pke_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of sites of the company or subsidiaries that have been named for potential environmental remediation liability.

+ References

No definition available.

+ Details

Name:	pke_NumberOfSitesOfCompanyOrSubsidiariesThatHaveBeenNamedForPotentialEnvironmentalRemediationLiability
Namespace Prefix:	pke_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of units covered under general liability insurance coverage.

+ References

No definition available.

+ Details

Name:	pke_NumberOfUnitsCoveredUnderGeneralLiabilityInsuranceCoverage
Namespace Prefix:	pke_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of legal defense and remediation costs associated with sites reimbursed by insurance carriers.

+ References

No definition available.

+ Details

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Namespace Prefix:	pke_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 25

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346

+ Details

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

- Definition

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_LitigationStatusAxis=pke_TwoInsuranceCarriersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=pke_InsuranceCarrierOoneMember
Namespace Prefix:
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Balance Type:
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Note 12 - Contingencies (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended
Note 12 - Contingencies (Details Textual) $ in Thousands	Aug. 30, 2015 USD ($)	Aug. 31, 2014 USD ($)	Aug. 30, 2015 USD ($)	Aug. 31, 2014 USD ($)	Mar. 01, 2015 USD ($)
Two Insurance Carriers [Member]
Percentage of Legal Defense and Remediation Costs Associated with Sites Reimbursed by Insurance Carriers			100.00%
Insurance Carrier One [Member]
Percentage of Legal Defense and Remediation Costs Associated with Sites Reimbursed by Insurance Carriers			45.00%
Accrual for Environmental Loss Contingencies	$ 0		$ 0		$ 0
Number of Sites of Company or Subsidiaries That Have Been Named for Potential Environmental Remediation Liability			4
Percentage of Legal Defense and Remediation Costs Associated with Sites Reimbursed by Insurance Carriers			100.00%
Number of Units Covered Under General Liability Insurance Coverage			3
Litigation Settlement, Expense	$ 1	$ 11	$ 2	$ 18
Number of Insurance Carriers			2
Number of Insurance Carriers That Have Filed Answers to Lawsuit			3