Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Revenues, net	$ 183,243	$ 162,970
UNITED STATES
Revenues, net	102,352	90,455
EMEA, excluding U.K. [Member]
Revenues, net	38,804	35,233
UNITED KINGDOM
Revenues, net	7,589	7,128
APAC, excluding Greater China [Member]
Revenues, net	14,005	11,629
CHINA
Revenues, net	16,080	13,422
Rest of World [Member]
Revenues, net	4,413	5,103
Consumables [Member]
Revenues, net	151,445	135,653
Instruments [Member]
Revenues, net	16,993	15,346
Service [Member]
Revenues, net	10,623	8,301
Product and Services [Member]
Revenues, net	179,061	159,299
Royalty [Member]
Revenues, net	$ 4,182	$ 3,671