Note 3 - Acquisition of SynGen - Supplemental Pro Forma Data (Details) - SynGen [Member] - USD ($)	6 Months Ended	12 Months Ended
Dec. 31, 2017	Jun. 30, 2017	Jun. 30, 2016
Net revenues	$ 6,013,000	$ 15,592,000	$ 12,856,000
Net loss	$ (2,600,000)	$ (30,701,000)	$ (22,841,000)
Basic and diluted net loss per common share (in dollars per share)	$ (0.21)	$ (3.39)	$ (8.73)

The pro forma basic and diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

No definition available.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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