Note 12 - Subsequent Events (Details Textual) - USD ($) $ in Thousands		6 Months Ended
	Jan. 17, 2017	Dec. 31, 2016	Dec. 31, 2015
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		$ 12,400
Zephyrus [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		$ 3,000
Subsequent Event [Member] | Zephyrus [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ (3,500)