NOTE 9—SEGMENT INFORMATION

The Company currently operates in a single business segment. Management uses one measurement of profitability and does not segregate its business for internal reporting.  For the three and nine months ended September 30, 2017, sales to customers in the United States accounted for approximately 63% and 64% of net revenue, respectively, and international sales accounted for approximately 37% and 36% of net revenue, respectively. For the three and nine months ended September 30, 2016, sales to customers in the United States accounted for approximately 66% and 63% of net revenue, respectively, and international sales accounted for approximately 34% and 37% of net revenue, respectively.  No individual country, other than the United States, represented more than 10% of total net revenue during the three and nine months ended September 30, 2017 or 2016.

Net revenue by geographic location based on the location of customers was as follows (in thousands):  

Property, plant, and equipment by geographic location was as follows (in thousands):