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Segment and Geographic Information (Tables)
9 Months Ended
Feb. 28, 2021
Segment Reporting [Abstract]  
Summary of Net Sales by Product Category
The table below summarizes net sales by Global Business Unit: 
Three Months EndedNine Months Ended
(in thousands)Feb 28, 2021Feb 29, 2020Feb 28, 2021Feb 29, 2020
Net sales
Vascular Interventions & Therapies 
$33,251 $30,552 $97,008 $90,616 
Vascular Access24,813 24,642 76,848 70,585 
Oncology13,118 14,586 40,312 44,624 
Total$71,182 $69,780 $214,168 $205,825 
Summary of Net Sales by Geographic Area
The table below summarizes net sales by geographic area based on external customer location:
Three Months EndedNine Months Ended
(in thousands)Feb 28, 2021Feb 29, 2020Feb 28, 2021Feb 29, 2020
Net sales
United States$58,654 $54,889 $173,446 $163,381 
International12,528 14,891 40,722 42,444 
Total$71,182 $69,780 $214,168 $205,825