Note 11 - Income Taxes (Details Textual) - USD ($)	Jun. 30, 2016	Jun. 30, 2015
Domestic Tax Authority [Member]
Operating Loss Carryforwards	$ 15,700,000	$ 13,800,000
Foreign Tax Authority [Member] \| Australian Taxation Office [Member]
Operating Loss Carryforwards	32,100,000	34,700,000
Foreign Tax Authority [Member] \| Her Majesty's Revenue and Customs (HMRC) [Member]
Operating Loss Carryforwards	22,800,000	25,000,000
Foreign Tax Authority [Member] \| Ministry of the Economy, Finance and Industry, France [Member]
Operating Loss Carryforwards	18,800,000	13,200,000
Unrecognized Tax Benefits	0
Deferred Tax Assets, Valuation Allowance	$ 36,200,000	$ 27,100,000

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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