Note 8 - Other Assets (Tables)

6 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Other Assets [Table Text Block]

	As of December 31, 2019		As of June 30, 2019
Deposits and prepaid expenses	$	225,428	$	462,215
Other current assets		47,386		83,890
Total	$	272,814	$	546,105

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

	December 31, 2019
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	3,034,242	$	-	$	-		$	3,034,242
Other short term investments		757,790		-		-			757,790
Other equities		1,421		-		(535	)		886
Total short-term investments	$	3,793,453	$	-	$	(535	)	$	3,792,918

	June 30, 2019
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair 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