Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Revenues, net	$ 204,199	$ 183,243
UNITED STATES
Revenues, net	113,561	102,352
EMEA, excluding U.K. [Member]
Revenues, net	43,134	38,804
UNITED KINGDOM
Revenues, net	8,534	7,589
APAC, excluding Greater China [Member]
Revenues, net	15,734	14,005
CHINA
Revenues, net	18,052	16,080
Rest of World [Member]
Revenues, net	5,184	4,413
Consumables [Member]
Revenues, net	166,627	151,445
Instruments [Member]
Revenues, net	19,572	16,993
Service [Member]
Revenues, net	15,464	10,623
Product and Services [Member]
Revenues, net	201,663	179,061
Royalty [Member]
Revenues, net	$ 2,536	$ 4,182