Note H - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Sep. 25, 2020	Sep. 27, 2019
Effective Income Tax Rate Reconciliation, Percent, Total	19.10%	20.50%
Effective Income Tax Rate Reconciliation, Mix of Earnings by Jurisdiction, Percent	1.40%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 1,138
Foreign Tax Authority [Member]
Open Tax Year	2013 2014 2015 2016 2017 2018 2019
Foreign Tax Authority [Member] \| Tax and Customs Administration, Netherlands [Member]
Open Tax Year	2019
State and Local Jurisdiction [Member] \| Wisconsin Department of Revenue [Member]
Open Tax Year	2011 2012 2013

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to mix of earnings by jurisdiction.

No definition available.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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