Note 6 - Licenses, Royalty Collaborative and Contractual Arrangements (Details) - Components of Revenues from Royalties, Collaborative and Contractual Agreements (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Royalty revenue	$ 0	$ 0
Service revenue under BARDA contract	0.7	12.2
Revenue under other contracts, grants and collaborations		0.1
Total revenue	0.7	12.3
Relenza [Member]
Segment Reporting Information [Line Items]
Royalty revenue	0	0
Inavir [Member]
Segment Reporting Information [Line Items]
Royalty revenue	$ 0	$ 0