Note 10 - Other Income and Expense - Summary of Other Income and Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Interest income	$ 128	$ 399	$ 504
Interest expense	(845)	(674)	(669)
Foreign currency gain (loss), net	(316)	(86)	(59)
Income (loss) from equity investment		(307)	118
Brazil tax settlements	1,446
Lawsuit settlements	(666)	(100)
Sale of scrap material	70	71	95
Other income (expense), net	324	190	81
	$ 141	$ (507)	$ 70