Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Deferred Tax Assets:
Net operating loss	$ 7,432	$ 10,186
Depreciation and amortization	4,573	0
Deferred compensation	2,274	1,897
Stock-based compensation	1,555	1,083
Credit carryforwards	1,378	1,332
Uniform capitalization and inventory	1,253	1,506
Reserve for accrued employee benefits	988	872
Warranty accrual	752	559
Other	317	506
Deferred tax assets	20,522	17,941
Deferred Tax Liabilities:
Depreciation and amortization	0	(3,764)
Retention and other	(1,491)	(1,229)
Deferred tax liabilities	(1,491)	(4,993)
Less: valuation allowance	(1,967)	(3,787)
Net deferred income tax asset	$ 17,064	$ 9,161