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Geographic Information | 12 Months Ended
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Sep. 30, 2018
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,
| 2018 |  | 2017 |  | 2016
United States | $ | 335,743 |  |  | $ | 279,352 |  |  | $ | 405,298 |
Canada | 42,235 |  |  | 45,540 |  |  | 77,252 |
Middle East and Africa | 38,490 |  |  | 26,639 |  |  | 40,294 |
Far East | 12,976 |  |  | 3,877 |  |  | 7,895 |
Europe | 10,538 |  |  | 21,194 |  |  | 26,200 |
Mexico, Central and South America | 8,734 |  |  | 19,309 |  |  | 8,304 |
Total revenues | $ | 448,716 |  |  | $ | 395,911 |  |  | $ | 565,243 |
| September 30,
| 2018 |  | 2017
Long-lived assets: |  |  |
United States | $ | 76,016 |  |  | $ | 82,589 |
Canada | 48,126 |  |  | 52,122 |
United Kingdom | 4,622 |  |  | 4,709 |
Total | $ | 128,764 |  |  | $ | 139,420 |
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.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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