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Segment Information - Concentration of credit risk - Account receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2024 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |
Accounts receivable | $ 14,888 | $ 14,494
Customer A | Accounts Receivable | Credit Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable | $ 1,800 | $ 3,000
Concentration risk percentage | 12.00% | 20.00%
Customer D | Accounts Receivable | Credit Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable | $ 2,000 | $ 1,300
Concentration risk percentage | 13.00% | 9.00%
Customer E | Accounts Receivable | Credit Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable | $ 1,800 | $ 1,900
Concentration risk percentage | 12.00% | 13.00%
Customer F | Accounts Receivable | Credit Concentration Risk |  |
Segment Reporting Information [Line Items] |  |
Accounts receivable | $ 1,800 | $ 900
Concentration risk percentage | 12.00% | 6.00%

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-21 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-18 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-20 + Details
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