Note 7 - Investments and Fair Value of Financial Instruments (Tables)

9 Months Ended

Mar. 31, 2019

Notes Tables

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

	March 31, 201 9
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	1,000,335	$	-	$	-		$	1,000,335
USCF mutual fund investment		-		-		-			-
Hedged asset		33,203		-		-			33,203
Other equities		3,421		-		(968	)		2,453
Total investments	$	1,036,959	$	-	$	(968	)		1,035,991

	June 30, 2018
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	180,138	$	-	$	-		$	180,138
USCF mutual fund investment		2,500,000		280,480					2,780,480
Hedged asset		523,100		-		(280,761	)		242,339
Other equities		1,577		-		(529	)		1,048
Total investments	$	3,204,815	$	280,480	$	(281,290	)	$	3,204,005

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

	March 31, 201 9
	Total		Level 1		Level 2		Level 3
Money market funds	$	1,000,335	$	1,000,335	$	-	$	-
USCF mutual fund investment		-		-		-		-
Hedge asset		33,203		-		33,203		-
Other equities		2,453		2,453		-		-
Total	$	1,035,991	$	1,002,788	$	33,203	$	-

	June 30, 2018
	Total		Level 1		Level 2		Level 3
Money market funds	$	180,138	$	180,138	$	-	$	-
Mutual fund investment		2,780,480		2,780,480		-		-
Hedge asset		242,339		-		242,339		-
Other equities		1,048		1,048		-		-
Total	$	3,204,005	$	2,961,666	$	242,339	$	-