Note 20 - Stock Options - Summary of Options Activities (Details) - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Employee Stock Option Plan 2017 [Member]
Outstanding. options (in shares)	270,750	216,375	216,375
Outstanding, weighted average exercise price (in dollars per share)	$ 5.35	$ 4.89	$ 4.89
Outstanding, weighted average remaining contractual term (Year)	3 years 4 months 17 days	3 years 18 days	3 years 5 months 4 days	2 years 11 months 1 day
Aggregate intrinsic value outstanding	$ 142	$ 590	$ 268	$ 140
Granted, options (in shares)	40,000	48,000
Granted, weighted average exercise price (in dollars per share)	$ 6.17	$ 4.88
Exercised, options (in shares)	0	0
Exercised, weighted average exercise price (in dollars per share)	$ 0	$ 0
Forfeited or expired, options (in shares)	0	0
Outstanding, options (in shares)	310,750	264,375	270,750	216,375
Outstanding at September 30, 2024 (in dollars per share)	$ 5.45	$ 4.88	$ 5.35	$ 4.89
Exercisable, options (in shares)	164,500	152,875
Exercisable, weighted average exercise price (in dollars per share)	$ 5.54	$ 4.55
Exercisable, weighted average remaining contractual term (Year)	2 years 10 months 2 days	2 years 3 months 18 days
Exercisable, aggregate intrinsic value	$ 73	$ 390
Exercised, options (in shares)	0	0
Exercised, options (in shares)	(0)	(0)
Director Plan 2017 [Member]
Outstanding. options (in shares)	431,000	420,000	420,000
Outstanding, weighted average exercise price (in dollars per share)	$ 5.24	$ 4.91	$ 4.91
Outstanding, weighted average remaining contractual term (Year)	2 years 7 months 17 days	2 years 7 months 28 days	2 years 10 months 17 days	2 years 7 months 28 days
Aggregate intrinsic value outstanding	$ 349	$ 954	$ 531	$ 309
Granted, options (in shares)	0	0
Granted, weighted average exercise price (in dollars per share)	$ 0	$ 0
Exercised, options (in shares)	0	0
Exercised, weighted average exercise price (in dollars per share)	$ 0
Forfeited or expired, options (in shares)	0
Outstanding, options (in shares)	431,000	420,000	431,000	420,000
Outstanding at September 30, 2024 (in dollars per share)	$ 5.24	$ 4.91	$ 5.24	$ 4.91
Exercisable, options (in shares)	431,000	420,000
Exercisable, weighted average exercise price (in dollars per share)	$ 5.24	$ 4.91
Exercisable, weighted average remaining contractual term (Year)	2 years 7 months 17 days	2 years 7 months 28 days
Exercisable, aggregate intrinsic value	$ 349	$ 954
Exercised, options (in shares)	0	0
Exercised, options (in shares)	0	0
Forfeited or expired, weighted average exercise price (in dollars per share)	$ 0