Income and Other Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Federal net operating loss carryforwards	$ 78,872	$ 94,691
Foreign net operating loss carryforwards	0	1,135
Income tax credit carryforwards	355	592
Inventory reserves	1,666	735
Accounts receivable reserves	60	57
Accrued warranty reserve	103	115
State net operating loss carryforwards	7,547	7,888
Stock compensation	1,203	1,352
Deferred compensation	1,022	465
Fixed assets and intangibles	5,276	1,212
ROU lease liability	5,751	5,862
ROU lease assets	(5,195)	(5,724)
Capitalized Research expense	3,385	0
Capitalized Research expense	355	592
Other	2,935	2,443
Total deferred tax assets	102,981	110,823
Valuation allowance	(102,981)	(110,846)
Net deferred tax liabilities	$ 0	$ (23)