Note 7 - Other Assets (Tables)

12 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Other Assets [Table Text Block]

	As of June 30, 2020		As of June 30, 2019
Prepaid expenses	$	394,473	$	462,215
Other current assets		209,471		83,890
Total	$	603,944	$	546,105

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

	As of June 30, 2020
			Gross		Gross			Estimated
			Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Money market funds	$	1,044,446	$	5,161	$	-		$	1,049,607
Other short term investments		770,094		-		-			770,094
Other equities		1,421		-		(606	)		815
Total short-term investments	$	1,815,961	$	5,161	$	(606	)	$	1,820,516

	As of June 30, 2019
			Gross		Gross			Estimated
			Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Money market funds	$	3,005,182	$	-	$	-		$	3,005,182
Other short term investments		749,988		-		(739	)		749,249
Other equities		3,421		-		(1,256	)		2,165
Total short-term investments	$	3,758,591	$	-	$	(1,995	)	$	3,756,596

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	As of June 30, 2020
	Total		Level 1		Level 2		Level 3
Money market funds	$	1,049,607	$	1,049,607	$	-	$	-
Other short term investments		770,094		770,094		-		-
Other equities		815		815		-		-
Total	$	1,820,516	$	1,820,516	$	-	$	-

	As of June 30, 2019
	Total		Level 1		Level 2		Level 3
Money market funds	$	3,005,182	$	3,005,182	$	-	$	-
Other short term investments		749,249		749,249		-		-
Other equities		2,165		2,165		-		-
Total	$	3,756,596	$	3,756,596	$	-	$	-