Revenue - Dissagregate (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Net revenues	$ 42,546	$ 61,175	$ 68,334	$ 64,490	$ 68,234	$ 63,311	$ 60,206	$ 56,266	$ 236,545	$ 248,017	$ 217,043
United States
Disaggregation of Revenue [Line Items]
Net revenues									226,063	240,114	215,233
International
Disaggregation of Revenue [Line Items]
Net revenues									10,482	7,903	1,810
Peripheral
Disaggregation of Revenue [Line Items]
Net revenues									166,412	178,896	161,405
Coronary
Disaggregation of Revenue [Line Items]
Net revenues									$ 70,133	$ 69,121	$ 55,638