Note 7 - Other Assets (Tables)

9 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Other Assets [Table Text Block]

	As of March 31, 2023		As of June 30, 2022
Prepaid expenses	$	1,054,686	$	630,285
Other current assets		83,605		69,262
Total	$	1,138,291	$	699,547

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

	March 31, 2023
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	3,036,823	$	-	$	-		$	3,036,823
Other short-term investments		277,271		-		(661	)		276,610
Short-term treasury bills		1,958,546		13,374		-			1,971,920
Other equities		3,496,926		52,745		(131,534	)		3,418,137
Total short-term investments	$	8,769,566	$	66,119	$	(132,195	)	$	8,703,490

	June 30, 2022
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	1,051,017	$	-	$	-		$	1,051,017
Other short term investments		271,346		-		(1,919	)		269,427
Short-term treasury bills		2,470,020		-		(4,156	)		2,465,864
Other equities		1,246,926		32,697		-			1,279,623
Total short-term investments	$	5,039,309	$	32,697	$	(6,075	)	$	5,065,931