Note 11 - Accrued Expenses - Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Payroll and related costs	$ 1,419	$ 1,362
Commissions	91	51
Customer deposits	39	45
Legal and audit	146	321
Sales tax	24	9
Utilities	145	91
Warranty	16	14
Accrued purchase of materials and property, plant and equipment	473	144
Provision for re-instatement	308	290
Deferred income	64	67
Contract liabilities	1,178	628
Other accrued expenses	836	279
Currency translation effect	5	62
Total	$ 4,744	$ 3,363