Note 3 - Acquired Tangible and Intangible Assets and Assumed Liabilities of Anaconda Pharma (Details) - USD ($) $ in Millions	Jun. 03, 2015
Anaconda Pharma [Member]
Cash and cash equivalents	$ 0.3
Prepaid expenses and other current assets	0.2
Notes payable	(1.0)
Accounts payable	(0.4)
Accrued expenses	(0.2)
In-process research and development	17.6
Total purchase price	16.5
Sub-total net fair value of acquired assets and liabilities	$ (1.1)