Note 14 - Restructuring Costs (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2020	Mar. 31, 2019
Proceeds from Sale of Property, Plant, and Equipment, Total			$ 20,040,000
Inventory Write-down			1,720,000	$ 2,574,000
Restructuring and Related Costs, Incurred Cost, Total	$ 235,000		$ 744,000
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
Sale of Manufacturing Facility in North Canton, Ohio [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total	7,700,000
Gain (Loss) on Disposition of Property Plant Equipment, Total	3,700,000
Inventory Write-down	$ 451,000