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Summary of Revenue by Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | $ 95,809 | $ 75,748
Africa |  |
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | 20,192 | 5
Asia |  |
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | 10,171 | 2,143
Canada |  |
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | 5,232 | 15,945
Europe |  |
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | 25,860 | 4,743
United States |  |
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | 32,397 | 50,522
Other |  |
Schedule Of Revenues From External Customers [Line Items] |  |
Revenue | $ 1,957 | $ 2,390

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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