We are engaged in the development, design, production, construction and servicing of high temperature fuel cells for clean electric power generation. Critical to the success of our business is, among other things, our research and development efforts, both through customer-sponsored projects and Company-sponsored projects. The research and development activities are viewed as another product line that contributes to the development, design, production and sale of fuel cell products, however, it is not considered a separate operating segment. The chief operating decision maker does not review and assess financial information at a discrete enough level to be able to assess performance of research and development activities as if it operated as a standalone business segment, we have identified one business segment: fuel cell power plant production and research.

Revenues, by geographic location (based on the customer’s ordering location) for the years ended October 31, 2018, 2017 and 2016 were as follows (in thousands):

	2018		2017		2016
United States	$	50,953	$	47,539	$	48,697
South Korea		36,279		44,217		52,007
England		387		368		277
Germany		1,795		2,740		7,147
Canada		23		729		124
Spain		—		73		—
Total	$	89,437	$	95,666	$	108,252

Service agreement revenue which is included within Service agreements and license revenues on the consolidated statement of operations was $13.5 million, $24.4 million and $26.6 million, for the years ended October 31, 2018, 2017 and 2016, respectively.

Long-lived assets located outside of the United States as of October 31, 2018 and 2017 are not significant individually or in the aggregate.