Note 11 - Equity Compensation - Stock Options (Details) - USD ($)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Outstanding, shares (in shares)	1,727,147
Outstanding, weighted average exercise price (in dollars per share)	$ 6.79
Outstanding, weighted average remaining contractual term (Year)	4 years 6 months	5 years 3 months 18 days
Outstanding, aggregate intrinsic value	$ 16,294,427	$ 13,305,057
Granted (in shares)	0
Granted, weighted average exercise price (in dollars per share)	$ 0
Exercised (in shares)	(142,581)
Exercised, weighted average exercise price (in dollars per share)	$ 7.83
Forfeited (in shares)	(25,000)
Forfeited, weighted average exercise price (in dollars per share)	$ 15.01
Expired (in shares)	0
Expired, weighted average exercise price (in dollars per share)	$ 0
Outstanding, shares (in shares)	1,559,566	1,727,147
Outstanding, weighted average exercise price (in dollars per share)	$ 6.56	$ 6.79
Exercisable, shares (in shares)	1,329,556
Exercisable, weighted average exercise price (in dollars per share)	$ 5.18
Exercisable, weighted average remaining contractual term (Year)	3 years 9 months 18 days
Exercisable, aggregate intrinsic value	$ 15,730,127
Vested and expected to vest, shares (in shares)	1,525,654
Vested and expected to vest at, weighted average exercise price (in dollars per share)	$ 6.4
Vested and expected to vest, weighted average remaining contractual term (Year)	4 years 4 months 24 days
Vested and expected to vest, aggregate intrinsic value	$ 16,210,880