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Accounts Receivable, Net | 9 Months Ended
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Jun. 30, 2023
Accounts Receivable, after Allowance for Credit Loss [Abstract] |
Accounts Receivable, Net | 6. Accounts Receivable, Net The following is a summary of accounts receivable, net as of June 30, 2023 and September 30, 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | September 30,
​ |  | 2023 |  | 2022
Accounts receivable | ​ | $ | 171,422 | ​ | $ | 168,920
Less allowance for expected credit losses | ​ |  | (8,403) | ​ |  | (5,162)
Accounts receivable, net | ​ | $ | 163,019 | ​ | $ | 163,758
​ The allowance for expected credit losses for the nine months ended June 30, 2023 and fiscal year ended September 30, 2022 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended | ​ | Year ended
​ | ​ | June 30, 2023 | ​ | September 30, 2022
​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at Beginning of Period | ​ | $ | 5,162 | ​ | $ | 4,318
Provisions |  | ​ | 6,963 |  | ​ | 3,536
Reversals of Bad Debt Expense | ​ | ​ | (3,652) | ​ | ​ | (2,278)
Write-offs and Adjustments | ​ |  | (70) | ​ | ​ | (414)
Balance at End of Period | ​ | $ | 8,403 | ​ | $ | 5,162

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- Definition The entire disclosure for accounts receivable, contract receivable, receivable held-for-sale, and nontrade receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//310/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//326/tableOfContent + Details
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- References No definition available. + Details
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