Note 6 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023
Total lease cost	$ 428	$ 403	$ 1,244	$ 1,205
Operating lease assets (Year)	2 years 7 months 24 days		2 years 7 months 24 days		1 year 8 months 19 days
Finance lease assets (Year)	1 month 13 days		1 month 13 days		10 months 13 days
Operating lease assets	9.18%		9.18%		7.78%
Finance lease assets	6.54%		6.54%		6.54%
Operating cash flows from operating leases			$ 1,034	1,076
Operating cash flows from finance leases			3	7
Financing cash flows from finance leases			69	73
Operating Expense [Member]
Operating lease cost	$ 388	360	1,129	1,076
Short-term lease cost	25	27	69	71
Cost of Sales [Member]
Amortization of leased assets	14	14	43	51
Other Expense [Member]
Interest on lease liabilities	$ 1	$ 2	$ 3	$ 7