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Note 6 - Goodwill - Changes to Goodwill (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2021	Jun. 30, 2022
Balance			$ 278,054
Acquisitions			8,381
Impairments			0
Translation adjustment			(18,529)
Balance			267,906
Electronics Products Group [Member]
Balance			144,832
Acquisitions			8,381
Impairments			0
Translation adjustment			(16,244)
Balance			136,969
Engraving Group [Member]
Balance			77,378
Acquisitions			0
Impairments			0
Translation adjustment			(1,128)
Balance			76,250
Scientific Group [Member]
Balance			15,454
Acquisitions			0
Impairments			0
Translation adjustment			0
Balance			15,454
Engineering Technologies Group [Member]
Balance			37,085
Acquisitions			0
Impairments	$ (7,600)	$ (7,600)	0
Translation adjustment			(1,157)
Balance			35,928
Specialty Solutions Group [Member]
Balance			3,305
Acquisitions			0
Impairments			0
Translation adjustment			0
Balance			$ 3,305