Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Deferred Tax Assets, Valuation Allowance	$ 44,400	$ 36,200
Unrecognized Tax Benefits	0
Domestic Tax Authority [Member]
Operating Loss Carryforwards	18,400	15,700
Foreign Tax Authority [Member] \| Australian Taxation Office [Member]
Operating Loss Carryforwards	44,300	32,100
Foreign Tax Authority [Member] \| Her Majesty's Revenue and Customs (HMRC) [Member]
Operating Loss Carryforwards	25,400	22,800
Foreign Tax Authority [Member] \| Ministry of the Economy, Finance and Industry, France [Member]
Operating Loss Carryforwards	$ 29,200	$ 18,800

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=84230637&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)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

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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=84230637&loc=SL6600010-109319

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