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Income Taxes (Tables) | 12 Months Ended
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Sep. 30, 2025
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Taxes | The components of income before income taxes are (in thousands):
| Year ended September 30,
| 2025 |  | 2024 |  | 2023
United States | $ | 47,517 |  |  | $ | 19,088 |  |  | $ | 21,149 |
International | 2,400 |  |  | 3,770 |  |  | 3,769 |
Income before income taxes | $ | 49,917 |  |  | $ | 22,858 |  |  | $ | 24,918 |
Schedule of Components of Income Tax Provision | The components of the income tax expense are (in thousands):
| Year ended September 30,
| 2025 |  | 2024 |  | 2023
Current: |  |  |  |  |
Federal | $ | 12,263 |  |  | $ | 9,149 |  |  | $ | 9,894 |
State | 2,318 |  |  | 1,995 |  |  | 1,955 |
Foreign | 1,110 |  |  | 832 |  |  | 598 |
Deferred: |  |  |  |  |
Federal | (5,563) |  |  | (11,189) |  |  | (12,131) |
Foreign | (1,015) |  |  | (434) |  |  | (168) |
Income tax (benefit) expense | $ | 9,113 |  |  | $ | 353 |  |  | $ | 148 |
Schedule of Net Deferred Tax Asset | Net deferred tax liability consists of (in thousands):
| As of September 30,
| 2025 |  | 2024
Non-current deferred tax asset | $ | 5,131 |  |  | $ | 16,141 |
Non-current deferred tax liability | (164) |  |  | (1,308) |
Net deferred tax asset (liability) | $ | 4,967 |  |  | $ | 14,833 |
Depreciation and amortization | $ | (5,075) |  |  | $ | (4,735) |
Lease asset | (1,927) |  |  | (2,283) |
Lease liability | 2,783 |  |  | 3,183 |
Inventories | 5,737 |  |  | 6,614 |
Compensation costs | 6,308 |  |  | 5,552 |
Deferred Revenue | 10,863 |  |  | 7,595 |
Other accruals | 5,839 |  |  | 5,805 |
Tax credit carryforwards | 4,488 |  |  | 3,531 |
Net operating loss carryforwards | 9,840 |  |  | 323 |
Valuation allowance | (3,217) |  |  | (3,317) |
Identifiable intangible assets | (57,926) |  |  | (25,533) |
Research and development costs | 27,254 |  |  | 18,098 |
Net deferred tax asset (liability) | $ | 4,967 |  |  | $ | 14,833 |
Schedule of Effective Income Tax Rate Reconciliation | The reconciliation of the statutory federal income tax amount to our income tax benefit is (in thousands):
| Year ended September 30,
| 2025 |  | 2024 |  | 2023
Statutory income tax amount | $ | 10,494 |  |  | $ | 4,800 |  |  | $ | 5,233 |
Increase (decrease) resulting from: |  |  |  |  |
State taxes, net of federal benefits | 601 |  |  | 401 |  |  | 636 |
Employee stock purchase plan | 141 |  |  | 159 |  |  | 165 |
Foreign operations | 1,412 |  |  | 1,751 |  |  | 984 |
Non-deductible executive compensation | 734 |  |  | 519 |  |  | 373 |
Utilization of research and development tax credits | (4,000) |  |  | (5,224) |  |  | (4,678) |
ASU 2016-09 excess stock compensation | (673) |  |  | (47) |  |  | (1,678) |
Changes from provision to return | 1,123 |  |  | (791) |  |  | 181 |
Adjustment of tax contingency reserves | 465 |  |  | 491 |  |  | 238 |
U.S. deduction for foreign export sales | (1,724) |  |  | (1,827) |  |  | (1,419) |
Other, net | 540 |  |  | 121 |  |  | 113 |
Income tax (benefit) expense | $ | 9,113 |  |  | $ | 353 |  |  | $ | 148 |
Schedule of Unrecognized Tax Benefits Roll Forward | A reconciliation of the beginning and ending amount of unrecognized tax benefits is (in thousands):
| Year ended September 30,
| 2025 |  | 2024 |  | 2023
Unrecognized tax benefits at beginning of fiscal year | $ | 3,602 |  |  | $ | 3,162 |  |  | $ | 3,316 |
Increases related to: |  |  |  |  |
Prior year income tax positions | 579 |  |  | 71 |  |  | 100 |
Current year income tax positions | 726 |  |  | 768 |  |  | 858 |
Decreases related to: |  |  |  |  |
Prior year income tax positions | (92) |  |  | — |  |  | (159) |
Expiration of statute of limitations | (503) |  |  | (399) |  |  | (953) |
Unrecognized tax benefits at end of fiscal year | $ | 4,312 |  |  | $ | 3,602 |  |  | $ | 3,162 |

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