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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2025

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The Company's (benefit) expense from income taxes from continuing operations consists of the following for the periods presented:

			Fiscal Year Ended September 30,
in thousands			2025						2024						2023
Current federal			$	6,019					$	8,377					$	—
Current state			3,299						5,101						1,896
Deferred federal			(13,202)						6,317						18,997
Deferred state			(854)						(885)						3,065
Total (benefit) expense from income taxes			$	(4,738)					$	18,910					$	23,958

Schedule of Effective Income Tax Rate Reconciliation

The Company's (benefit) expense from income taxes from continuing operations differs from the amount computed by applying the federal income tax statutory rate as follows for the periods presented:

			Fiscal Year Ended September 30,
in thousands			2025						2024						2023
Income tax computed at statutory rate			$	8,579					$	33,408					$	38,356
State income taxes, net of federal benefit			2,223						3,273						2,874
Permanent differences			4,261						9,140						2,037
Stock-based compensation			611						1,055						179
Tax credits			(20,253)						(27,918)						(20,287)
Deferred rate change			(343)						53						665
Other, net			184						(101)						134
Total (benefit) expense from income taxes			$	(4,738)					$	18,910					$	23,958

Schedule of Deferred Tax Assets And Liabilities

The tax effects of significant temporary differences that give rise to the net deferred tax assets are as follows as of September 30, 2025 and 2024:

in thousands			September 30, 2025						September 30, 2024
Deferred tax assets:
Federal and state net operating loss and tax credit carryforwards			$	140,962					$	126,547
Inventory adjustments			21,286						7,914
Property, equipment and other assets			7,900						6,199
Warranty and other reserves			7,789						6,613
Incentive compensation			7,565						8,621
Uncertain tax positions			705						705
Other			1,953						4,816
Total deferred tax assets			188,160						161,415
Valuation allowance			(35,758)						(27,578)
Total deferred tax assets, net of valuation allowance			$	152,402					$	133,837
Deferred tax liabilities:
Operating lease right-of-use assets			$	(8,449)					$	(4,286)
Intangible assets			(1,306)						(1,026)
Total deferred tax liabilities			(9,755)						(5,312)
Net deferred tax assets			$	142,647					$	128,525

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of our unrecognized tax benefits is as follows for the beginning and end of each period presented:

			Fiscal Year Ended September 30,
in thousands			2025						2024						2023
Balance at beginning of year			$	2,420					$	3,358					$	3,358
Additions for tax positions related to current year			—						—						—
Additions for tax positions related to prior years			—						—						—
Reductions in tax positions of prior years			—						—						—
Lapse of statute of limitations			(425)						(938)						—
Balance at end of year			$	1,995					$	2,420					$	3,358

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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.

+ References

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-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
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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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-Section 50
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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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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Tabular disclosure of the change in unrecognized tax benefits.

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