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Revenue Recognition (Tables) | 6 Months Ended
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Mar. 31, 2020
Revenue From Contract With Customer [Abstract] |
Summary of Revenue from the Sale of Products and Performance of Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Operating Segments | For each of the Company’s operating segments, the following table presents revenue only from the sale of products and the performance of services under contracts with customers (in thousands). Therefore, the table excludes all revenue earned from rental contracts.
|  | Three Months Ended |  |  | Six Months Ended |
|  | March 31, 2020 |  |  | March 31, 2019 |  |  | March 31, 2020 |  |  | March 31, 2019 |
Oil and Gas Markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Traditional exploration product revenue |  | $ | 1,257 |  |  | $ | 3,261 |  |  | $ | 3,587 |  |  | $ | 5,987 |
Wireless exploration product revenue |  |  | 479 |  |  |  | 310 |  |  |  | 883 |  |  |  | 454 |
Reservoir product revenue |  |  | 337 |  |  |  | 994 |  |  |  | 517 |  |  |  | 1,882 |
Total revenue |  |  | 2,073 |  |  |  | 4,565 |  |  |  | 4,987 |  |  |  | 8,323 |
Adjacent Markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Industrial product revenue |  |  | 4,186 |  |  |  | 4,120 |  |  |  | 7,782 |  |  |  | 7,682 |
Imaging product revenue |  |  | 2,886 |  |  |  | 3,114 |  |  |  | 5,362 |  |  |  | 6,165 |
Total revenue |  |  | 7,072 |  |  |  | 7,234 |  |  |  | 13,144 |  |  |  | 13,847 |
Emerging Markets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  | 372 |  |  |  | 46 |  |  |  | 469 |  |  |  | 134 |
Total |  | $ | 9,517 |  |  | $ | 11,845 |  |  | $ | 18,600 |  |  | $ | 22,304 |
Summary of Revenue from the Sale of Products and Services Under Contracts with Customers Excludes All Revenue Earned from Rental Contracts by Geographic Areas | For each of the geographic areas where the Company operates, the following table presents revenue (in thousands) from the sale of products and services under contracts with customers. The table excludes all revenue earned from rental contracts:
|  | Three Months Ended |  |  | Six Months Ended |
|  | March 31, 2020 |  |  | March 31, 2019 |  |  | March 31, 2020 |  |  | March 31, 2019 |
Asia |  | $ | 830 |  |  | $ | 1,510 |  |  | $ | 1,275 |  |  | $ | 3,068 |
Canada |  |  | 794 |  |  |  | 342 |  |  |  | 1,267 |  |  |  | 630 |
Europe |  |  | 1,259 |  |  |  | 1,170 |  |  |  | 2,672 |  |  |  | 2,085 |
United States |  |  | 6,184 |  |  |  | 8,265 |  |  |  | 12,781 |  |  |  | 14,875 |
Other |  |  | 450 |  |  |  | 558 |  |  |  | 605 |  |  |  | 1,646 |
Total |  | $ | 9,517 |  |  | $ | 11,845 |  |  | $ | 18,600 |  |  | $ | 22,304 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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