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Segments and Geographic Information (Tables) | 12 Months Ended
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May 31, 2018
Segment Reporting [Abstract] |
Summary of total net sales by product category | Total sales by product category are summarized below (in thousands):
| Year ended May 31,
(in thousands) | 2018 |  | 2017 |  | 2016
Net sales by Product Category |  |  |  |  |
Peripheral Vascular | $ | 202,334 |  |  | $ | 208,602 |  |  | $ | 205,620 |
Vascular Access | 92,760 |  |  | 96,481 |  |  | 99,375 |
Oncology/Surgery | 49,191 |  |  | 44,560 |  |  | 48,895 |
Total | $ | 344,285 |  |  | $ | 349,643 |  |  | $ | 353,890 |
Summary of net sales for geographic areas | Total sales for geographic areas are summarized below (in thousands):
| Year ended May 31,
(in thousands) | 2018 |  | 2017 |  | 2016
Net sales by Geography |  |  |  |  |
United States | $ | 273,327 |  |  | $ | 282,168 |  |  | $ | 285,824 |
International | 70,958 |  |  | 67,475 |  |  | 68,066 |
Total | $ | 344,285 |  |  | $ | 349,643 |  |  | $ | 353,890 |

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 + Details
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