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Geographic Information (Tables) | 12 Months Ended
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Sep. 30, 2016
Segment Reporting [Abstract] |
Schedule of Revenues from External Customers by Geographical Areas | 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, |
| 2016 |  |  | 2015 |  |  | 2014 |
United States | $ | 405,298 |  |  | $ | 474,038 |  |  | $ | 365,085 |
Canada |  | 77,252 |  |  |  | 101,191 |  |  |  | 137,684 |
Middle East and Africa |  | 40,294 |  |  |  | 40,557 |  |  |  | 84,330 |
Europe |  | 26,200 |  |  |  | 23,567 |  |  |  | 34,920 |
Far East |  | 7,895 |  |  |  | 12,026 |  |  |  | 15,127 |
Mexico, Central and South America |  | 8,304 |  |  |  | 10,479 |  |  |  | 10,668 |
Total revenues | $ | 565,243 |  |  | $ | 661,858 |  |  | $ | 647,814 |
Schedule of Long-Lived Assets by Geographical Areas |
| September 30, |
| 2016 |  |  | 2015 |
Long-lived assets: |  |  |  |  |  |  |
United States | $ | 88,304 |  |  | $ | 95,694 |
Canada |  | 52,292 |  |  |  | 53,879 |
United Kingdom |  | 4,381 |  |  |  | 5,021 |
Total | $ | 144,977 |  |  | $ | 154,594 |

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- Definition Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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