Note 18 - Industry Segment Information (Details Textual) $ in Thousands		12 Months Ended
		Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Number of Reportable Segments		5	5
Number of Operating Segments		5
Property, Plant and Equipment, Additions	[1]	$ 34,506	$ 25,603	$ 23,890
Accounts Payable and Accrued Liabilities [Member]
Property, Plant and Equipment, Additions		$ 3,800	$ 400	$ 400

[1] Includes capital expenditures in accounts payable of $3.8 million, $0.4 million, and $0.4 million at June 30, 2019, 2018, and 2017 respectively.