Note 14 - Restructuring Costs (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Proceeds from Sale of Property, Plant, and Equipment, Total			$ 12,340,000	$ 10,000
Gain (Loss) on Disposition of Property Plant Equipment, Total		$ 4,800,000
Sell Manufacturing Facility In New Windsor, New York [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total		12,300,000
Gain (Loss) on Disposition of Property Plant Equipment, Total		$ 4,800,000
Restructuring and Related Costs, Incurred Cost, Total	$ 276,000		$ 509,000