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Note 10 - Income Taxes | 3 Months Ended
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Mar. 31, 2026
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | NOTE 10 - INCOME TAXES For the three months ended March 31, 2026 and 2025, the Company recorded income tax expense of $0.6 million and income tax expense of $0.4 million, respectively. The effective tax rates for the three months ended March 31, 2026 and 2025, were 2.9% and 7.5%, respectively. For the three months ended March 31, 2026, the effective tax rate differs from the federal statutory rate primarily due to state income taxes, research and development tax credit, and stock based compensation. For the three months ended March 31, 2025, the effective tax rate differs from the federal statutory rate primarily due to state income taxes, research and development tax credit, and change in valuation allowance. The Company is subject to income taxes in the U.S. and various state jurisdictions. Significant judgment is required in determining the Company's provision for income taxes, deferred tax assets and liabilities and any valuation allowance recorded against its net deferred tax assets. The Company monitors the realizability of its deferred tax assets at each reporting period. In completing the Company's assessment of realizability of its deferred tax assets, the Company considers, among other things: its history of income (loss) measured at pre-tax income (loss) adjusted for permanent book-tax differences on a jurisdictional basis; volatility in actual earnings; and the impacts of the timing of reversals of existing temporary differences. The Company also relies on its assessment of the Company’s projected future results of business operations, including uncertainty in future operating results, variable macroeconomic conditions, and changes in business that may affect the existence and magnitude of future taxable income. The Company's valuation allowance assessment is based on its best estimate of future results considering all available information. As of September 30, 2025, based on the relevant weight of positive and negative evidence, including improved and sustained profitability trends as well as consideration of the Company's expected future taxable earnings, the Company concluded that it is more likely than not that its U.S. federal and certain state deferred tax assets are realizable. As such, the Company released $371.7 million of its valuation allowance associated with the U.S. federal and state deferred tax assets, except for those related to certain state net operating loss carryforwards. The Company continues to maintain a full or partial valuation allowance against certain state attributes as of March 31, 2026, because the Company concluded it is not more likely than not to be realized, as the Company expects certain state attribute generation in future years to exceed its ability to use these deferred tax assets. The Company's provision for income taxes for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter, the Company updates its estimate of the annual effective tax rate, and if the Company's estimated tax rate changes, it makes a cumulative adjustment. Under Internal Revenue Code Section 382, if a corporation undergoes an “ownership change,” the corporation’s ability to use its pre-change NOL carryforwards and other pre-change tax attributes to offset its post-change income may be limited. The Company has completed a study to assess whether an “ownership change” has occurred through December 31, 2023 as defined in Section 382. Based on the analysis, the Company experienced an ownership change in November 2012. The Company estimates the base Section 382 annual limitation regarding the Company’s November 2012 ownership change to be immaterial. Future changes in the Company's stock ownership, which may be outside of its control, may trigger an additional “ownership change.” In addition, future equity offerings or acquisitions that have equity as a component of the purchase price could result in an “ownership change.” If an “ownership change” has occurred or does occur in the future, utilization of the NOL carryforwards or other tax attributes may be limited, which could potentially result in increased future tax liability to us.

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