Note 16 - Industry Segment Information - Net Sales and Income (Loss) by Industry Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Food Service Equipment Group [Member]
Net sales	$ 87,944	$ 91,064	$ 286,093	$ 303,430
Income from operations	8,455	6,404	29,183	24,989
Restructuring costs	(170)	(186)	(2,296)	(1,650)
Engraving Group [Member]
Net sales	28,560	26,896	94,016	81,609
Income from operations	$ 5,305	5,757	22,655	18,647
Restructuring costs		(15)	(35)	(79)
Engineering Technologies Group [Member]
Net sales	$ 19,358	24,590	58,780	71,314
Income from operations	$ 1,744	3,655	4,512	9,093
Restructuring costs		(55)	(160)	(55)
Electronics Products Group [Member]
Net sales	$ 29,909	28,006	86,245	85,299
Income from operations	5,263	5,298	15,338	15,582
Restructuring costs	(215)	(142)	(762)	(570)
Hydraulics Products Group [Member]
Net sales	11,694	10,443	32,677	30,711
Income from operations	2,007	1,723	5,502	4,897
Corporate and Other [Member]
Income from operations	(5,223)	(4,607)	(17,478)	(15,874)
Net sales	177,465	180,999	557,811	572,363
Income from operations	17,160	17,832	56,325	54,921
Restructuring costs	(391)	(398)	(3,387)	(2,354)
Interest expense	(807)	(938)	(2,182)	(2,369)
Other non-operating income (expense)	(115)	103	369	556
Other non-operating income	(115)	103	369	556
Income from continuing operations before income taxes	$ 16,238	$ 16,997	$ 54,512	53,108
Other operating income (expense), net				$ (59)