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Geographic Information
12 Months Ended
Sep. 30, 2017
Segment Reporting [Abstract]  
Geographic Information
Geographic Information
Revenues by country represent sales to unaffiliated customers as determined by the ultimate destination of our products and services, summarized for the last three fiscal years by region in the table below (in thousands):
 
Year Ended September 30,
 
2017
 
2016
 
2015
United States
$
279,352

 
$
405,298

 
$
474,038

Canada
45,540

 
77,252

 
101,191

Middle East and Africa
26,639

 
40,294

 
40,557

Europe
21,194

 
26,200

 
23,567

Mexico, Central and South America
19,309

 
8,304

 
10,479

Far East
3,877

 
7,895

 
12,026

Total revenues
$
395,911

 
$
565,243

 
$
661,858


 
September 30,
 
2017
 
2016
Long-lived assets:
 
 
 
United States
$
82,589

 
$
88,304

Canada
52,122

 
52,292

United Kingdom
4,709

 
4,381

Total
$
139,420

 
$
144,977


Long-lived assets by country consist of property, plant and equipment, net of accumulated depreciation and are determined based on the location of the tangible assets.