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Note 18 - Restructuring - Summary of Restructuring Expenses by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Restructuring charges $ 1,488 $ 1,479
Restructuring charges 1,488 1,479
Involuntary Employee Severance And Benefit Costs [Member]    
Restructuring charges 1,054 1,000
Restructuring charges 1,054 1,000
Other Restructuring [Member]    
Restructuring charges 434 479
Restructuring charges 434 479
Electronics Products Group [Member]    
Restructuring charges 174  
Restructuring charges 174  
Electronics Products Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]    
Restructuring charges 169  
Restructuring charges 169  
Electronics Products Group [Member] | Other Restructuring [Member]    
Restructuring charges 5  
Restructuring charges 5  
Engraving Group [Member]    
Restructuring charges 238 1,038
Restructuring charges 238 1,038
Engraving Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]    
Restructuring charges 91 559
Restructuring charges 91 559
Engraving Group [Member] | Other Restructuring [Member]    
Restructuring charges 147 479
Restructuring charges 147 479
Specialty Solutions Group [Member]    
Restructuring charges 955 91
Restructuring charges 955 91
Specialty Solutions Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]    
Restructuring charges 673 91
Restructuring charges 673 91
Specialty Solutions Group [Member] | Other Restructuring [Member]    
Restructuring charges 282 0
Restructuring charges 282 0
Engineering Technologies Group [Member]    
Restructuring charges 35  
Restructuring charges 35  
Engineering Technologies Group [Member] | Involuntary Employee Severance And Benefit Costs [Member]    
Restructuring charges 35  
Restructuring charges 35  
Engineering Technologies Group [Member] | Other Restructuring [Member]    
Restructuring charges 0  
Restructuring charges 0  
Corporate Segment [Member]    
Restructuring charges 86 350
Restructuring charges 86 350
Corporate Segment [Member] | Involuntary Employee Severance And Benefit Costs [Member]    
Restructuring charges 86 350
Restructuring charges 86 350
Corporate Segment [Member] | Other Restructuring [Member]    
Restructuring charges 0 0
Restructuring charges $ 0 $ 0