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

6 Months Ended

Dec. 31, 2017

Notes Tables

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

	December 3 1 , 2017
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	479,910	$	-	$	-		$	479,910
USCI mutual fund investment		2,500,000		203,720		-			2,703,720
Hedged asset		395,000		-		(211,912	)		183,088
Other equities		1,577		-		(440	)		1,137
Total short-term investments	$	3,376,487	$	203,720	$	(212,352	)		3,367,855

	June 30, 2017
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Money market funds	$	86,204	$	-	$	-		$	86,204
USCI mutual fund investment		2,500,000		-		(49,080	)		2,450,920
MENU ETF investment		768,427		41,473		-			809,900
Hedged asset		187,000		43,746		-			230,746
Other equities		1,577		-		(598	)		979
Total short-term investments	$	3,543,208	$	85,219	$	(49,678	)	$	3,578,749

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

	December 3 1 , 2017
	Total		Level 1		Level 2		Level 3
Money market funds	$	479,910	$	479,910	$	-	$	-
Mutual fund investment		2,703,720		2,703,720		-		-
Hedge asset		183,088		-		183,088		-
Other equities		1,137		1,137		-		-
Total	$	3,367,855	$	3,184,767	$	183,088	$	-

	June 30, 2017
	Total		Level 1		Level 2		Level 3
Money market funds	$	86,204	$	86,204	$	-	$	-
Mutual fund investment		2,450,920		2,450,920		-		-
ETF investment		809,900		809,900		-		-
Hedge asset		230,746		-		230,746		-
Other equities		979		979		-		-
Total	$	3,578,749	$	3,348,003	$	230,746	$	-