Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Disaggregation of Revenue [Line Items]
Net Sales	$ 73,970	$ 71,182	$ 229,221	$ 214,168
United States
Disaggregation of Revenue [Line Items]
Net Sales	62,445	58,654	192,259	173,446
International
Disaggregation of Revenue [Line Items]
Net Sales	11,525	12,528	36,962	40,722
Endovascular Therapies
Disaggregation of Revenue [Line Items]
Net Sales	38,083	33,251	115,799	97,008
Endovascular Therapies | United States
Disaggregation of Revenue [Line Items]
Net Sales	34,400	29,529	105,405	87,198
Endovascular Therapies | International
Disaggregation of Revenue [Line Items]
Net Sales	3,683	3,722	10,394	9,810
Vascular Access
Disaggregation of Revenue [Line Items]
Net Sales	23,431	24,813	73,459	76,848
Vascular Access | United States
Disaggregation of Revenue [Line Items]
Net Sales	19,483	21,009	60,664	60,392
Vascular Access | International
Disaggregation of Revenue [Line Items]
Net Sales	3,948	3,804	12,795	16,456
Oncology
Disaggregation of Revenue [Line Items]
Net Sales	12,456	13,118	39,963	40,312
Oncology | United States
Disaggregation of Revenue [Line Items]
Net Sales	8,562	8,116	26,190	25,856
Oncology | International
Disaggregation of Revenue [Line Items]
Net Sales	3,894	5,002	13,773	14,456
Med Tech
Disaggregation of Revenue [Line Items]
Net Sales	19,612	15,246	56,117	39,581
Med Device
Disaggregation of Revenue [Line Items]
Net Sales	$ 54,358	$ 55,936	$ 173,104	$ 174,587