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Stock-Based Compensation (Details) - USD ($) |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 10, 2020 | Feb. 16, 2017 | Sep. 27, 2010 | Sep. 30, 2023 | Sep. 30, 2022 | Feb. 02, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common stock issued under employee stock purchase plan (in shares) |  |  |  | 39,000 | 36,000 |
Stock based compensation reflected in additional paid in capital |  |  |  | $ 1,000,000 | $ 600,000 |
2010 Long-Term Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  | 475,000
Contractual term of stock options granted |  |  | 10 years |  |  |
2017 Long-Term Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  | 4,000,000 |  |
Number of additional shares authorized (in shares) | 1,052,000 | 650,000 |  |  |  |
Right to purchase common stock, non-vested and outstanding, exercise price (in USD per share) |  |  |  | $ 4.44 |  |
Share based payment award, vesting period |  |  |  | 3 years |  |
Options outstanding, net of awards expired (in shares) |  |  |  | 100,000 |  |
2017 Long-Term Incentive Plan Excluding 2010 Long-Term Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  | 3,492,000
Employee Stock Purchase Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Common Stock, capital shares reserved for future issuance (in shares) |  |  |  | 400,000 |  |
Shares available for issuance under the ESPP (in shares) |  |  |  | 100,000 |  |
Purchase price of common stock (as a percent) |  |  |  | 85.00% |  |
Maximum employee subscription rate (as a percent) |  |  |  | 15.00% |  |
Maximum number of shares per employee (in shares) |  |  |  | 3,000 |  |
Amount in excess of fair market value of stock for option not to be granted |  |  |  | $ 25,000 |  |
Offering period |  |  |  | 6 months |  |

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