Note 14 - Restructuring Costs (Details Textual)	3 Months Ended
	Sep. 30, 2018 USD ($) a	Sep. 30, 2017 USD ($)
Inventory Write-down	$ 766,000	$ 143,000
Closure of Leased Facility in Hawthorne, California [Member]
Area of Real Estate Property | a	12,000
Inventory Write-down	$ 435,000