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Business segments - Schedule of Long-Lived Assets by Geographical Areas (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Sep. 30, 2019
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Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | $ 318,732 | $ 164,866
United States |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | 255,346 | 134,511
Australia |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | 30,183 | 11,950
Canada |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | 24,522 | 14,681
United Kingdom |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | 7,610 | 3,129
Rest of World |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Total long-lived assets | $ 1,071 | $ 595

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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