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Business combinations - Schedule of the Valuation of the Intangible Assets Acquired (Details) - USD ($) $ in Thousands |  | 12 Months Ended
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May 28, 2021 | Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life |  | 10 years 9 months 18 days
VES Group, Inc. |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Fair Value | $ 664,000 |
Customer contracts and relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life |  | 10 years 10 months 24 days
Customer contracts and relationships | VES Group, Inc. |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life | 12 years |
Estimated Fair Value | $ 580,000 |
Provider network |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life |  | 11 years 8 months 12 days
Provider network | VES Group, Inc. |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life | 12 years |
Estimated Fair Value | $ 57,000 |
Technology-based intangible assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life |  | 11 years 6 months
Technology-based intangible assets | VES Group, Inc. |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Straight-Line Useful Life | 12 years |
Estimated Fair Value | $ 27,000 |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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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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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Details
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