Note 20 - Stock Options - Summary of Options Activities (Details) - Employee Stock Option Plan 2017 [Member] - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Outstanding. options (in shares)	216,375	236,375	236,375
Outstanding, weighted average exercise price (in dollars per share)	$ 4.89	$ 5.21	$ 5.21
Outstanding, weighted average remaining contractual term (Year)	3 years 18 days	2 years 8 months 26 days	2 years 11 months 1 day	2 years 7 months 9 days
Aggregate intrinsic value outstanding	$ 590	$ 106	$ 140	$ 87
Granted, options (in shares)	48,000	25,000
Granted, weighted average exercise price (in dollars per share)	$ 4.88	$ 5.18
Exercised, options (in shares)	0	(5,000)
Exercised, weighted average exercise price (in dollars per share)	$ 0	$ 3.75
Forfeited or expired, options (in shares)	0	(40,000)
Outstanding, options (in shares)	264,375	216,375	216,375	236,375
Outstanding, weighted average exercise price (in dollars per share)	$ 4.88	$ 5.16	$ 4.89	$ 5.21
Exercisable, options (in shares)	152,875	131,750
Exercisable, weighted average exercise price (in dollars per share)	$ 4.55	$ 4.8
Exercisable, weighted average remaining contractual term (Year)	2 years 3 months 18 days	1 year 11 months 12 days
Exercisable, aggregate intrinsic value	$ 390	$ 80
Exercised, options (in shares)	0	(5,000)