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Segments and Geographic Information
 12 Months Ended
May 31, 2014
Segment Reporting [Abstract]  
SEGMENTS AND GEOGRAPHIC INFORMATION
SEGMENTS AND GEOGRAPHIC INFORMATION
Segment information
We consider our business to be a single segment entity – the development, manufacture and sale on a global basis of medical devices for vascular access, surgery, peripheral vascular disease and oncology. Our chief operating decision maker (CEO) evaluates the various global product portfolios on a net sales basis. Executives reporting in to the CEO include those responsible for operations and supply chain management, research and development, sales, franchise marketing and certain corporate functions. The CEO evaluates profitability, investment and cash flow metrics on a consolidated worldwide basis due to shared infrastructure and resources. Prior to fiscal year 2013, our business was organized as two segments: Vascular and Oncology/Surgery, each under the direction of a general manager with direct responsibility for all sales, marketing and product development activities.
Total sales by product category are summarized below (in thousands):
 
 
Year Ended
 
May 31,
2014
 
May 31,
2013
 
May 31,
2012
Net sales by Product Category
 
 
 
 
 
Peripheral Vascular
$
192,656

 
$
179,683

 
$
95,200

Vascular Access
106,394

 
106,690

 
63,857

Oncology/Surgery
49,360

 
47,155

 
62,730

Supply Agreement
6,045

 
8,498

 
—

Total
$
354,455

 
$
342,026

 
$
221,787



Geographic information
Total sales for geographic areas are summarized below (in thousands):
 
 
Year Ended
 
May 31,
2014
 
May 31,
2013
 
May 31,
2012
Net sales by Geography
 
 
 
 
 
United States
$
280,191

 
$
266,338

 
$
188,187

International
68,219

 
67,190

 
33,600

Supply Agreement
6,045

 
8,498

 
—

Total
$
354,455

 
$
342,026

 
$
221,787


For fiscal years 2014, 2013 and 2012, International sales as a percentage of total net sales were 19%, 20% and 15%, respectively. Sales to any one country outside the U.S., as determined by shipment destination, did not comprise a material portion of our net sales in any of the last three fiscal years. 99% of our total assets are located within the United States.