Note E - Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Balance, Definite Intangible Assets Gross Carrying Amount	$ 39,587	$ 13,485
Balance, Definite Intangible Assets Accumulated Amortization/Impairment	(14,434)	(11,781)
Balance at June 30, Definite Intangible Assets Net Book Value	25,153	1,704
Addition, Definite Intangible Assets Gross Carrying Amount	92	236
Addition, Definite Intangible Assets Net Book Value	92	236
Acquistion, Definite Intangible Assets Gross Carrying Amount		26,500
Acquistion, Definite Intangible Assets Net Book Value		26,500
Amortization, Definite Intangible Assets	(4,532)	(2,653)
Amortization, Definite Intangible Assets Net Book Value	(4,532)	(2,653)
Translation adjustment, Definite Intangible Assets Gross Carrying Amount	(434)	(634)
Translation adjustment, Definite Intangible Assets Net Book Value	(434)	(634)
Impairment, Definite Intangible Assets Accumulated Amortization/Impairment	(1,306)
Addition, Definite Intangible Assets Gross Carrying Amount	39,245	39,587
Balance, Definite Intangible Assets Accumulated Amortization/Impairment	(20,272)	(14,434)
Balance at June 30, Definite Intangible Assets Net Book Value	18,973	25,153
Customer Relationships [Member]
Balance at June 30, Definite Intangible Assets Net Book Value	14,843
Addition, Definite Intangible Assets Net Book Value
Acquistion, Definite Intangible Assets Net Book Value		16,300
Amortization, Definite Intangible Assets	(3,003)	(1,123)
Amortization, Definite Intangible Assets Net Book Value	(3,003)	(1,123)
Translation adjustment, Definite Intangible Assets Net Book Value	(286)	(334)
Impairment, Definite Intangible Assets Accumulated Amortization/Impairment
Balance at June 30, Definite Intangible Assets Net Book Value	11,554	14,843
Technology-Based Intangible Assets [Member]
Balance at June 30, Definite Intangible Assets Net Book Value	7,025
Addition, Definite Intangible Assets Net Book Value
Acquistion, Definite Intangible Assets Net Book Value		8,400
Amortization, Definite Intangible Assets	(1,139)	(1,172)
Amortization, Definite Intangible Assets Net Book Value	(1,139)	(1,172)
Translation adjustment, Definite Intangible Assets Net Book Value	(102)	(203)
Impairment, Definite Intangible Assets Accumulated Amortization/Impairment
Balance at June 30, Definite Intangible Assets Net Book Value	5,784	7,025
Trade Names [Member]
Balance at June 30, Definite Intangible Assets Net Book Value	2,733	1,288
Addition, Definite Intangible Assets Net Book Value
Acquistion, Definite Intangible Assets Net Book Value		1,800
Amortization, Definite Intangible Assets	(232)	(261)
Amortization, Definite Intangible Assets Net Book Value	(232)	(261)
Translation adjustment, Definite Intangible Assets Net Book Value	(33)	(94)
Impairment, Definite Intangible Assets Accumulated Amortization/Impairment	(1,080)
Balance at June 30, Definite Intangible Assets Net Book Value	1,388	2,733
Other Intangible Assets [Member]
Balance at June 30, Definite Intangible Assets Net Book Value	552	416
Addition, Definite Intangible Assets Net Book Value	92	236
Acquistion, Definite Intangible Assets Net Book Value
Amortization, Definite Intangible Assets	(158)	(97)
Amortization, Definite Intangible Assets Net Book Value	(158)	(97)
Translation adjustment, Definite Intangible Assets Net Book Value	(13)	(3)
Impairment, Definite Intangible Assets Accumulated Amortization/Impairment	(226)
Balance at June 30, Definite Intangible Assets Net Book Value	$ 247	$ 552