| **Accounts Receivable, net, Contract Assets, and Contract Liabilities** | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
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| **Receivables [Abstract]**                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Accounts Receivable, net, Contract Assets, and Contract Liabilities     | Accounts Receivable, net, Contract Assets, and Contract LiabilitiesThe components of accounts receivable, net consisted of the following:September 30,(in thousands)20242023Accounts receivable, gross$14,515 $15,931 Allowance for credit loss(173)(356)Accounts receivable, net$14,342 $15,575 The following table summarizes changes in the allowance for credit loss:Year Ended September 30,(in thousands)20242023Balance at beginning of period$356 $337 Provision adjustment - expense, net of recoveries96 193 Write-offs and other deductions(279)(174)Balance at end of period$173 $356 Certain of our customers are billed based on fee schedules that are agreed upon in each customer contract. Contract assets represent accrued revenues that have not yet been billed to the customers due to certain contractual terms other than the passage of time and were $1.1 million and $8.4 million as of September 30, 2024 and 2023, respectively. Contract liabilities represent payments received in advance of providing services under certain contracts and were $1.4 million and $1.6 million as of September 30, 2024 and 2023, respectively. Revenue recognized in the fiscal years ended September 30, 2024 and 2023 relating to contract liabilities as of the beginning of the respective fiscal year was $1.4 million and $5.3 million, respectively. |

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| - Definition
The entire disclosure for claims held for amounts due to entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.
+ References
Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/310-10/tableOfContentReference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2
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| - References
No definition available.
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