Note I - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 25, 2020	Dec. 27, 2019	Dec. 25, 2020	Dec. 27, 2019
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, Definite Intangible Assets Accumulated Amortization/Impairment	$ (843)	$ (1,143)	(1,678)	$ (2,272)
Amortization, Definite Intangible Assets Net Book Value	(843)	$ (1,143)	(1,678)	$ (2,272)
Translation adjustment, Definite Intangible Assets Gross Carrying Amount			1,559
Translation adjustment, Definite Intangible Assets Net Book Value			1,559
Balance, Definite Intangible Assets Gross Carrying Amount	40,806		40,806
Balance, Definite Intangible Assets Accumulated Amortization/Impairment	(21,950)		(21,950)
Balance at June 30, Definite Intangible Assets Net Book Value	18,856		18,856
Customer Relationships [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			11,554
Addition, Definite Intangible Assets Net Book Value			0
Amortization, Definite Intangible Assets Accumulated Amortization/Impairment			(936)
Amortization, Definite Intangible Assets Net Book Value			(936)
Translation adjustment, Definite Intangible Assets Net Book Value			951
Balance at June 30, Definite Intangible Assets Net Book Value	11,569		11,569
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, Definite Intangible Assets Accumulated Amortization/Impairment			(610)
Amortization, Definite Intangible Assets Net Book Value			(610)
Translation adjustment, Definite Intangible Assets Net Book Value			473
Balance at June 30, Definite Intangible Assets Net Book Value	5,647		5,647
Trade Names [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			1,388
Addition, Definite Intangible Assets Net Book Value			0
Amortization, Definite Intangible Assets Accumulated Amortization/Impairment			(91)
Amortization, Definite Intangible Assets Net Book Value			(91)
Translation adjustment, Definite Intangible Assets Net Book Value			115
Balance at June 30, Definite Intangible Assets Net Book Value	1,412		1,412
Other Intangible Assets [Member]
Balance at June 30, Definite Intangible Assets Net Book Value			247
Addition, Definite Intangible Assets Net Book Value			2
Amortization, Definite Intangible Assets Accumulated Amortization/Impairment			(41)
Amortization, Definite Intangible Assets Net Book Value			(41)
Translation adjustment, Definite Intangible Assets Net Book Value			20
Balance at June 30, Definite Intangible Assets Net Book Value	$ 228		$ 228