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Income Taxes (Tables)

12 Months Ended

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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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure of the change in unrecognized tax benefits.

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