NOTE 11—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 six months ended June 30, 2018, sales to customers in the United States accounted for approximately 59% and 58% of net revenue, respectively, and international sales accounted for approximately 41% and 42% of net revenue, respectively. For the three and six months ended June 30, 2017, sales to customers in the United States accounted for approximately 65% and 64% of net revenue, respectively, and international sales accounted for approximately 35% and 36% of net revenue, respectively. No individual country, other than the United States, represented more than 10% of total net revenue during the three and six months ended June 30, 2018 or 2017.

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):