Note 10 - Other Income and (Expense) - Summary of Other Income and Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Interest income	$ 90	$ 71	$ 128
Interest expense	(975)	(976)	(845)
Foreign currency gain (loss), net	140	(426)	(316)
Brazil tax settlements	2,544	345	1,446
Patent lawsuit settlement			(666)
Sale of scrap material	100	110	70
Other income (expense), net	160	195	324
Nonoperating Income (Expense), Total	(14,694)	(1,611)	(653)
Pension [Member]
Pension net periodic benefit cost (NPBC)	$ (16,753)	$ (930)	$ (794)