Note H - Income Taxes (Details Textual) - USD ($)	3 Months Ended
Sep. 27, 2019	Sep. 27, 2018
Effective Income Tax Rate Reconciliation, Percent, Total	20.50%	23.40%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 1,116
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
Domestic Tax Authority [Member]
Open Tax Year	2015 2016 2017 2018 2019
State and Local Jurisdiction [Member] \| Wisconsin Department of Revenue [Member]
Open Tax Year	2011 2012 2013 2014 2015

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

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

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

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