Note 3 - Merger (Details) - Net Assets Acquired (Biota, USD $) In Millions, unless otherwise specified	0 Months Ended
	Nov. 08, 2012
Note 3 - Merger (Details) - Net Assets Acquired [Line Items]
Cash	$ 32.7
Accounts payable	(0.7)
Net cash received	27.0
Excess of net assets acquired over total fair value purchase consideration/gain recorded on merger	7.8
Accrual for Severance Obligations and Employee Benefits [Member]
Note 3 - Merger (Details) - Net Assets Acquired [Line Items]
Accounts payable	$ (5.0)