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Note 13 - Income Taxes - Significant Portion of Net Deferred Tax Asset (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Sep. 30, 2022
Net operating loss carryforwards $ 10,665 $ 10,054
Research and development credit 4,929 4,712
Share-based compensation 650 688
Patents 2,203 2,331
Accruals and other 2,071 2,245
Capitalized R&E expenses 1,916 0
Allowances 237 280
Gross deferred tax assets 22,671 20,310
Equipment (274) (313)
Operating ROU assets (907) (1,066)
Acquired intangible assets (1,736) (2,180)
Gross deferred tax liabilities (2,917) (3,559)
Less valuation allowance (19,754) (9,378)
Net deferred tax assets and liabilities $ 0 $ 7,373