Note 6 - Goodwill, In-Process Research and Development, and Other Intangible Assets - Goodwill, In-Process Research and Development, and Other Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Balance, Finite-lived Intangible Assets	$ 1,775	$ 1,987
Balance, Goodwill	13,074	13,074
Balance, IPR&D	28,700	28,700
Balance, Finite-lived Intangible Assets	1,881	2,093
Balance, IPR&D	28,700	28,700
Goodwill impairment	0	0
Impairment, IP&D	0	0
Amortization expense, Finite-lived Intangible Assets	(106)	(106)
Balance, Goodwill	$ 13,074	$ 13,074