Note K - Stockholders' Equity - Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Mar. 26, 2021	Dec. 25, 2020	Sep. 25, 2020	Mar. 27, 2020	Dec. 27, 2019	Sep. 27, 2019	Mar. 26, 2021	Mar. 27, 2020
Balance	$ 142,395	$ 140,555	$ 139,958	$ 169,485	$ 173,363	$ 182,818	$ 139,958	$ 182,818
Translation adjustment during the quarter	(3,008)	4,899	3,612	(1,266)	1,647	(2,996)	5,503	(2,615)
Balance	140,853	142,395	140,555	144,035	169,485	173,363	140,853	144,035
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	11,941	7,054	3,454	3,072	1,425	4,439	3,454	4,439
Translation adjustment during the quarter	(2,970)	4,887	3,600	(1,257)	1,647	(3,014)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0	0	0
Net current period other comprehensive income	(2,970)	4,887	3,600	(1,257)	1,647	(3,014)
Net current period other comprehensive income	(2,970)	4,887	3,600	(1,257)	1,647	(3,014)
Balance	8,971	11,941	7,054	1,815	3,072	1,425	8,971	1,815
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Balance	(42,468)	(43,023)	(43,576)	(40,796)	(41,344)	(41,901)	(43,576)	(41,901)
Translation adjustment during the quarter	0	0	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	583	555	553	1,593	548	557
Net current period other comprehensive income	583	555	553	1,593	548	557
Net current period other comprehensive income	583	555	553	1,593	548	557
Balance	(41,885)	(42,468)	(43,023)	(39,203)	(40,796)	(41,344)	(41,885)	(39,203)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance	(925)	(1,029)	(1,104)	(506)	(652)	(509)	(1,104)	(509)
Translation adjustment during the quarter	0	0	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	193	104	75	(582)	146	(143)
Net current period other comprehensive income	193	104	75	(582)	146	(143)
Net current period other comprehensive income	193	104	75	(582)	146	(143)
Balance	$ (732)	$ (925)	$ (1,029)	$ (1,088)	$ (506)	$ (652)	$ (732)	$ (1,088)