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Note 3 - Revenue From Contracts With Customers (Details Textual) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jul. 01, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2018
Retained Earnings (Accumulated Deficit), Ending Balance	$ 760,397	$ 808,417		$ 808,417		$ 761,430
Revenue from Contract with Customer, Including Assessed Tax		193,771	$ 192,147	582,380	$ 566,982
Cost of Goods and Services Sold, Total		131,981	126,035	384,402	371,882
Accrued Liabilities, Current, Total	67,077	61,147		61,147		$ 57,679
Engineering Technologies Group [Member]
Revenue from Contract with Customer, Including Assessed Tax		27,467	23,426	71,818	65,621
Food Service Equipment Group [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 63,866	$ 70,881	$ 204,855	$ 221,853
Accounting Standards Update 2014-09 [Member]
Retained Earnings (Accumulated Deficit), Ending Balance	(1,033)
Revenue from Contract with Customer, Including Assessed Tax	(799)
Cost of Goods and Services Sold, Total	(574)
Accrued Liabilities, Current, Total	1,502
Accounting Standards Update 2014-09 [Member] \| Engineering Technologies Group [Member]
Revenue from Contract with Customer, Including Assessed Tax	700
Cost of Goods and Services Sold, Total	600
Accounting Standards Update 2014-09 [Member] \| Food Service Equipment Group [Member]
Accrued Liabilities, Current, Total	$ (1,500)