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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 21, 2024 $ / shares shares | Sep. 30, 2023 USD ($) $ / shares shares | Sep. 30, 2024 USD ($) segment lease $ / shares shares | Sep. 30, 2023 USD ($) $ / shares shares | Sep. 30, 2021 | Jun. 26, 2024 shares | Jun. 25, 2024 shares | Feb. 20, 2024 shares | Oct. 01, 2023 USD ($)
Product Information [Line Items] |  |  |  |  |  |  |  |  |
Year Founded |  |  | 1968 |  |  |  |  |  |
Number of Operating Segments | segment |  |  | 2 |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 |  |  |  |  |
Common stock, shares authorized | shares | 9,753,900 | 20,000,000 | 20,000,000 | 20,000,000 |  | 20,000,000 | 9,753,900 | 7,500,000 |
Stock split ratio | 2 |  |  | 2 |  |  |  |  |
Percentage of stock dividend effected from stock split | 100.00% | 100.00% |  | 100.00% |  |  |  |  |
Accounts receivable |  |  |  |  |  |  |  |  | $ 67
Net amount |  | $ 11,395 | $ 7,306 | $ 11,395 |  |  |  |  | 82
Retained earnings |  | 31,311 | 29,848 | 31,311 |  |  |  |  | $ 15
Employee retention credit (in percent) |  |  |  |  | 70.00% |  |  |  |
Employee Retention Tax Credit, net of costs |  | 2,800 |  |  |  |  |  |  |
Employee Retention Tax Credit, net of costs to collect |  |  | $ 0 | 2,136 |  |  |  |  |
Managed service contracts, right to refund, period |  |  | 30 days |  |  |  |  |  |
Research and development expense |  |  | $ 2,956 | 3,140 |  |  |  |  |
Impairment of long-lived assets |  |  | $ 0 | 0 |  |  |  |  |
Number of leases not yet commenced | lease |  |  | 0 |  |  |  |  |  |
One single lease component |  |  | true |  |  |  |  |  |
Inventory valuation reserves |  | $ 1,000 | $ 1,100 | $ 1,000 |  |  |  |  |
Number of years defined benefit plans are closed to newly hired employees |  |  | 2 years |  |  |  |  |  |
Number of years supplementary retirement plans are closed to newly hired employees |  |  | 2 years |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 3 years |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  | 3 years |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 10 years |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  | 7 years |  |  |  |  |  |

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