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Capitalized Software, Net (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Useful Life | 3 years |  |
Accumulated amortization | $ (27,198) | $ (16,937) |
Capitalized software, net | 62,577 | 52,341 |
Software capitalized during the period | 25,441 | 19,957 |
Amortization expense | 12,545 | 8,987 | $ 6,276
Amounts written down to net realizable value | 2,660 | 0 | $ 0
Software development costs |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Capitalized software | 81,141 | 60,013 |
Development in progress |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Capitalized software | $ 8,634 | $ 9,265 |
Minimum | Software development costs |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Useful Life | 3 years |  |
Maximum | Software development costs |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Useful Life | 7 years |  |

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- Definition For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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- Definition Additions made to capitalized computer software costs during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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- Definition Amount of expense for amortization of capitalized computer software costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -SubTopic 20 -Topic 985 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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- Definition Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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- Definition Amount of impairment loss from capitalized computer software costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -SubTopic 20 -Topic 985 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481283/985-20-50-1 + Details
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