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Note 15 - Industry Segment Information - Assets by Industry Segments (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
Assets $ 916,670 $ 867,676
Food Service Equipment Group [Member]    
Assets 245,688 243,414
Engraving Group [Member]    
Assets 150,769 115,664
Engineering Technologies Group [Member]    
Assets 151,908 150,805
Electronics Products Group [Member]    
Assets 290,044 292,776
Hydraulics Products Group [Member]    
Assets 24,651 21,405
Corporate and Other [Member]    
Assets $ 53,610 $ 43,612