Note 11 - Income Taxes - Components of Earnings (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	$ (23,435)	$ 287	$ 1,875	$ 1,276	$ 2,632	$ 3,045	$ 2,991	$ 942	$ (19,997)	$ 9,610	$ 4,865
Domestic Operations [Member]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total									(24,450)	1,507	1,351
Foreign Operations [Member]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total									$ 4,453	$ 8,103	$ 3,514