Note I - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 26, 2021	Mar. 27, 2020	Mar. 26, 2021	Mar. 27, 2020
Balance, Definite Intangible Assets Gross Carrying Amount			$ 39,245
Balance, Definite Intangible Assets Accumulated Amortization/Impairment			(20,272)
Balance at June 30, Definite Intangible Assets Net Book Value			18,973
Addition, Definite Intangible Assets Gross Carrying Amount			2
Addition, Definite Intangible Assets Net Book Value			2
Amortization, Intangible Asset	$ (838)	$ (1,148)	(2,516)	$ (3,420)
Translation adjustment, Definite Intangible Assets Gross Carrying Amount			961
Translation adjustment, Definite Intangible Assets Net Book Value			961
Balance, Definite Intangible Assets Gross Carrying Amount	40,208		40,208
Balance, Definite Intangible Assets Accumulated Amortization/Impairment	(22,788)		(22,788)
Balance at June 30, Definite Intangible Assets Net Book Value	17,420		17,420
Customer Relationships [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			11,554
Addition, Definite Intangible Assets Net Book Value			0
Amortization, Intangible Asset			(1,406)
Translation adjustment, Definite Intangible Assets Net Book Value			585
Balance at June 30, Definite Intangible Assets Net Book Value	10,733		10,733
Technology-Based Intangible Assets [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			5,784
Addition, Definite Intangible Assets Net Book Value			0
Amortization, Intangible Asset			(917)
Translation adjustment, Definite Intangible Assets Net Book Value			294
Balance at June 30, Definite Intangible Assets Net Book Value	5,161		5,161
Trade Names [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			1,388
Addition, Definite Intangible Assets Net Book Value			0
Amortization, Intangible Asset			(137)
Translation adjustment, Definite Intangible Assets Net Book Value			70
Balance at June 30, Definite Intangible Assets Net Book Value	1,321		1,321
Other Intangible Assets [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			247
Addition, Definite Intangible Assets Net Book Value			2
Amortization, Intangible Asset			(56)
Translation adjustment, Definite Intangible Assets Net Book Value			12
Balance at June 30, Definite Intangible Assets Net Book Value	$ 205		$ 205