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Note 15 - Restructuring (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Restructuring Charges, Total $ 7,594 $ 5,825 $ 4,232
Engineering Technologies Group [Member]      
Restructuring Charges, Total 1,098 3,879 160
Food Service Equipment Group [Member]      
Restructuring Charges, Total 4,165 1,186 2,979
Electronics Products Group [Member]      
Restructuring Charges, Total $ 299 499 $ 841
Manufacturing Footprint Optimization at the Enginetics, Huber Heights, Ohio Facility [Member] | Engineering Technologies Group [Member]      
Restructuring Charges, Total   3,600  
Expenses to Gain Organization Efficiencies [Member] | Food Service Equipment Group [Member]      
Restructuring Charges, Total   1,200  
Expenses to Move Facility in China Due to Government Directives [Member] | Electronics Products Group [Member]      
Restructuring Charges, Total   $ 500