Note 13 - Subsequent Events (Details Textual) - USD ($) $ in Thousands			1 Months Ended	6 Months Ended	12 Months Ended
	Sep. 05, 2017	Nov. 03, 2014	Jul. 31, 2017	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Payment for Contingent Consideration Liability, Financing Activities				$ 16,700	$ 21,060
CyVek, Inc. [Member]
Payments to Acquire Businesses, Gross		$ 62,000
Subsequent Event [Member] \| CyVek, Inc. [Member]
Payment for Contingent Consideration Liability, Financing Activities			$ 34,000
Subsequent Event [Member] \| Trevigen Inc [Member]
Payments to Acquire Businesses, Gross	$ 11,000