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Accounts receivable, net (Tables) | 6 Months Ended
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Mar. 31, 2025
Accounts receivable, net |
Schedule of change in allowance for accounts receivable | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three months ended
​ | ​ | March 31, 2025 | ​ | March 31, 2024
​ | ​ | (Amounts in thousands)
Allowance for credit losses for accounts receivable: | ​ | ​ | ​ | ​ | ​ | ​
Balances at beginning of the period | ​ | $ | 153 | ​ | $ | 61
(Benefit) provision for credit losses | ​ | ​ | (22) | ​ | ​ | 12
Balances at end of the period | ​ | $ | 131 | ​ | $ | 73
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Six months ended
​ | ​ | March 31, 2025 | ​ | March 31, 2024
​ | ​ | (Amounts in thousands)
Allowance for credit losses for accounts receivable: | ​ | ​ | ​ | ​ | ​ | ​
Balances at beginning of the period | ​ | $ | 147 | ​ | $ | 100
Adjustment for adoption of new CECL standard | ​ | ​ | - | ​ | ​ | (67)
(Benefit) provision for credit losses | ​ | ​ | (16) | ​ | ​ | 40
Balances at end of the period | ​ | $ | 131 | ​ | $ | 73
​

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration