Note 7 - Restructuring Charges (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Zenara [Member] | Restructuring Charges [Member]
Goodwill, Impairment Loss	$ 8,542
Impairment of Intangible Assets, Finite-lived	3,625
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down	$ 1,269
Goodwill, Impairment Loss		$ (8,542)	$ 0	$ 0