Note 7 - Other Assets - Investments (Details) - USD ($)	Jun. 30, 2017	Jun. 30, 2016
Investments, cost	$ 3,543,208	$ 1,673
Investments, gross unrealized gains	85,219
Investments, gross unrealized losses	(49,678)	(680)
Investments	3,578,749	993
Money Market Funds [Member]
Investments, cost	86,204	96
Investments, gross unrealized gains
Investments, gross unrealized losses
Investments	86,204	96
Mutual Fund [Member]
Investments, cost	2,500,000
Investments, gross unrealized gains
Investments, gross unrealized losses	(49,080)
Investments	2,450,920
Other Equities [Member]
Investments, cost	1,577	1,577
Investments, gross unrealized gains
Investments, gross unrealized losses	(598)	(680)
Investments	979	$ 897
ETF [Member]
Investments, cost	768,427
Investments, gross unrealized gains	41,473
Investments, gross unrealized losses
Investments	809,900
Hedge Asset [Member]
Investments, cost	187,000
Investments, gross unrealized gains	43,746
Investments, gross unrealized losses
Investments	$ 230,746

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section 45
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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