Note 10 - Accrued Expenses - Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Payroll and related costs	$ 1,560	$ 1,362
Commissions	83	51
Customer deposits	44	45
Legal and audit	346	321
Sales tax	31	9
Utilities	92	91
Warranty	16	14
Accrued purchase of materials and property, plant and equipment	435	144
Provision for reinstatement	308	290
Deferred income	70	67
Contract liabilities	603	628
Other accrued expenses	318	279
Currency translation effect	(34)	62
Total	$ 3,872	$ 3,363