Note 11 - Contingencies (Details Textual) $ in Thousands	3 Months Ended
May 28, 2017 USD ($)	May 29, 2016 USD ($)
Litigation Settlement, Expense	$ 375
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
Environmental Remediation Expense	$ 1	$ 1
Accrual for Environmental Loss Contingencies	$ 0	$ 0
Number of Insurance Carriers	3

Number of insurance carriers.

No definition available.

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Namespace Prefix:	pke_
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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=82911808&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

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

- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

+ Details

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

- 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