Note 18 - Restructuring - Summary of Restructuring Expenses by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Restructuring charges	$ 509	$ 720	$ 1,996	$ 2,199
Involuntary Employee Severance And Benefit Costs [Member]
Restructuring charges	304	795	1,357	1,795
Other Restructuring [Member]
Restructuring charges	205	(75)	639	404
Electronics Products Group [Member]
Restructuring charges	82	59	256	59
Electronics Products Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]
Restructuring charges	82	0	251	0
Electronics Products Group [Member] | Other Restructuring [Member]
Restructuring charges	0	59	5	59
Engraving Group [Member]
Restructuring charges	391	438	628	1,477
Engraving Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]
Restructuring charges	190	572	280	1,132
Engraving Group [Member] | Other Restructuring [Member]
Restructuring charges	201	(134)	348	345
Engineering Technologies Group [Member]
Restructuring charges	2	0	37	0
Engineering Technologies Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]
Restructuring charges	2	0	37	0
Engineering Technologies Group [Member] | Other Restructuring [Member]
Restructuring charges	0	0	0	0
Specialty Solutions Group [Member]
Restructuring charges	4	150	959	241
Specialty Solutions Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]
Restructuring charges	0	150	673	241
Specialty Solutions Group [Member] | Other Restructuring [Member]
Restructuring charges	4	0	286	0
Corporate Segment [Member]
Restructuring charges	30	73	116	422
Corporate Segment [Member] | Involuntary Employee Severance And Benefit Costs [Member]
Restructuring charges	30	73	116	422
Corporate Segment [Member] | Other Restructuring [Member]
Restructuring charges	$ 0	$ 0	$ 0	$ 0