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Note 18 - Industry Segment Information - Industry Segments (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Food Service Equipment Group [Member]                      
Net Sales                 $ 381,867 $ 408,706 $ 377,848
Depreciation and amortization                 5,030 5,176 4,485
Engraving Group [Member]                      
Net Sales                 124,120 110,781 109,271
Depreciation and amortization                 3,403 3,497 3,342
Engineering Technologies Group [Member]                      
Net Sales                 82,235 97,018 79,642
Depreciation and amortization                 5,363 4,278 3,063
Electronics Products Group [Member]                      
Net Sales                 118,319 114,196 114,881
Depreciation and amortization                 3,200 2,759 2,807
Hydraulics Products Group [Member]                      
Net Sales                 45,045 41,441 34,538
Depreciation and amortization                 651 665 625
Corporate and Other [Member]                      
Net Sales                
Depreciation and amortization                 306 309 269
Net Sales $ 193,775 $ 177,465 $ 181,948 $ 198,398 $ 199,779 $ 180,999 $ 189,337 $ 202,027 751,586 772,142 716,180
Depreciation and amortization                 $ 17,953 $ 16,684 $ 14,591