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Note 6 - Income Taxes | 3 Months Ended
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Mar. 31, 2022
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | 6. Income taxes The Company is subject to federal and state income taxes in the United States. The tax provision for interim periods is determined using an estimate of the Company's annual effective tax rate. The Company updates its estimated annual effective tax rate on a quarterly basis and, if the estimate changes, makes a cumulative adjustment. As of March 31, 2022 and December 31, 2021, the Company has recorded a full valuation allowance against net deferred tax assets and intends to continue maintaining a full valuation allowance on these net deferred tax assets until there is sufficient evidence to support the release of all or a portion of these allowances. Release of some or all of the valuation allowance would result in the recognition of certain deferred tax assets and an increase in deferred tax benefit for any period in which such a release may be recorded, however, the exact timing and amount of any valuation allowance release are subject to change, depending upon the level of profitability the Company is able to achieve and the net deferred tax assets available. For the three months ended March 31, 2022 and 2021, the Company's effective income tax benefit rate of 0% differed from the statutory federal income tax rate of 21%, with such differences resulting primarily from the application of the full valuation allowance against the Company's deferred tax assets. The Company assesses its income tax positions and records tax benefits for all years subject to examination based upon its evaluation of the facts, circumstances, and information available as of the reporting dates. For those tax positions where it is more-likely-than-not that a tax benefit will be sustained, the Company has recorded the largest amount of tax benefit with a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is not more-likely-than-not that a tax benefit will be sustained, no tax benefit has been recognized in the Company's financial statements. As of March 31, 2022 and December 31, 2021, the balance of unrecognized tax benefits was $1,480. The unrecognized tax benefits, if recognized, would result in an increase to net operating losses that would be subject to a valuation allowance and, accordingly, result in no impact to the Company’s annual effective tax rate. As of March 31, 2022, the Company has not accrued any interest or penalties with respect to its uncertain tax positions. The Company does not anticipate a significant increase or reduction in unrecognized tax benefits within the next twelve months.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 21 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 17 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.5.Q1) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 270 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI https://asc.fasb.org/topic&trid=2144680 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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