Note 24 - Stock Options - Summary of Options Activities (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Employee Stock Option Plan 2017 [Member]
Outstanding. options (in shares)	216,375	236,375
Outstanding. options (in shares)	81,750	75,875
Outstanding, weighted average exercise price (in dollars per share)	$ 4.89	$ 5.21
Outstanding, weighted average exercise price (in dollars per share)	$ 5.53	$ 5.98
Outstanding, weighted average remaining contractual term (Year)	3 years 5 months 4 days	2 years 11 months 1 day	2 years 7 months 9 days
Granted, options (in shares)	122,500	65,000
Aggregate intrinsic value outstanding	$ 268	$ 140	$ 87
Granted, weighted average exercise price (in dollars per share)	$ 6.26	$ 4.77
Vested (in shares)	(69,750)	(49,125)
Granted, weighted average exercise price (in dollars per share)	$ 4.94	$ 4.84
Forfeited or expired, options (in shares)		(10,000)
Exercise of stock option (in shares)	64,625	5,000
Exercised, weighted average exercise price (in dollars per share)	$ 3.14	$ 3.75
Granted (in dollars per share)	$ 6.26	$ 4.77
Forfeited or expired, options (in shares)	3,500	80,000
Forfeited or expired (in shares)	(3,500)	(80,000)
Outstanding, options (in shares)	134,500	81,750	75,875
Outstanding, weighted average exercise price (in dollars per share)	$ 5.12	$ 5.53	$ 5.98
Exercised (in shares)	(64,625)	(5,000)
Outstanding, options (in shares)	270,750	216,375	236,375
Outstanding, weighted average exercise price (in dollars per share)	$ 5.35	$ 4.89	$ 5.21
Exercisable at June 30, 2024 (in shares)	136,250
Exercisable at June 30, 2024 (in dollars per share)	$ 5.57
Exercisable at June 30, 2024 (Year)	2 years 10 months 13 days
Exercisable at June 30, 2024	$ 121
Director Plan 2017 [Member]
Outstanding. options (in shares)	420,000			420,000
Outstanding, weighted average exercise price (in dollars per share)	$ 4.91			$ 5.1
Outstanding, weighted average remaining contractual term (Year)	2 years 10 months 17 days	2 years 10 months 28 days		2 years 10 months 6 days
Granted, options (in shares)	100,000	100,000
Aggregate intrinsic value outstanding	$ 531	$ 309		$ 228
Granted, weighted average exercise price (in dollars per share)	$ 5.01	$ 4.51
Exercise of stock option (in shares)	89,000	20,000
Exercised, weighted average exercise price (in dollars per share)	$ 3.4	$ 2.53
Forfeited or expired, options (in shares)	(0)	80,000
Forfeited or expired (in shares)	0	(80,000)
Forfeited or expired (in dollars per share)	$ 0	$ 5.98
Outstanding, options (in shares)	0
Exercised (in shares)	(89,000)	(20,000)
Outstanding, options (in shares)	431,000	420,000
Outstanding, weighted average exercise price (in dollars per share)	$ 5.24	$ 4.91
Exercisable at June 30, 2024 (in shares)	431,000
Exercisable at June 30, 2024 (in dollars per share)	$ 5.24
Exercisable at June 30, 2024 (Year)	2 years 10 months 17 days
Exercisable at June 30, 2024	$ 531