Note H - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Sep. 29, 2017	Sep. 30, 2016
Effective Income Tax Rate Reconciliation, Percent	371.80%	28.30%
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	$ 308
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	20.30%
Effective Income Tax Rate Reconciliation, Mix of Earnings by Jurisdiction, Amount	$ 461
Effective Income Tax Rate Reconciliation, Mix of Earnings by Jurisdiction, Percent	30.50%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 888
Foreign Tax Authority [Member]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ (3,803)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	303.50%
Foreign Tax Authority [Member] | Earliest Tax Year [Member]
Open Tax Year	2011
Foreign Tax Authority [Member] | Latest Tax Year [Member]
Open Tax Year	2017
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Open Tax Year	2015
State and Local Jurisdiction [Member] | Earliest Tax Year [Member] | Wisconsin Department of Revenue [Member]
Open Tax Year	2010
State and Local Jurisdiction [Member] | Latest Tax Year [Member] | Wisconsin Department of Revenue [Member]
Open Tax Year	2015