Note M - Shareholders' Equity - Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 28, 2018	Sep. 28, 2018	Dec. 29, 2017	Sep. 29, 2017	Dec. 28, 2018	Dec. 29, 2017
Balance	$ 178,460	$ 143,616	$ 130,080	$ 123,567	$ 143,616	$ 123,567
Translation adjustment during the quarter	(1,786)	(561)	488	2,541	(2,347)	3,029
Release stranded tax effects
Balance	181,844	178,460	128,649	130,080	181,844	128,649
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	6,549	7,085	8,677	6,130	7,085	6,130
Translation adjustment during the quarter	(1,773)	(536)	489	2,547
Release stranded tax effects
Amounts reclassified from accumulated other comprehensive income
Net current period other comprehensive (loss) income	(1,773)	(536)	489	2,547
Other comprehensive income before reclassifications
Balance	4,776	6,549	9,166	8,677	4,776	9,166
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(37,309)	(30,877)	(38,327)	(38,801)	(30,877)	(38,801)
Translation adjustment during the quarter
Release stranded tax effects		(6,903)
Amounts reclassified from accumulated other comprehensive income	478	471	39	474
Net current period other comprehensive (loss) income	478	(6,432)	1,734	474
Other comprehensive income before reclassifications			1,695
Balance	$ (36,831)	$ (37,309)	$ (36,593)	$ (38,327)	$ (36,831)	$ (36,593)