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Note 12 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Federal income tax expense at statutory rate | $ 9,946 | $ 7,264 | $ (20,752)
State taxes, net of federal benefit | 1,445 | (1,329) | (2,820)
Valuation allowance | (1,202) | (101) | 1,762
Change in uncertain tax positions, net | 356 | (705) | 679
Research and development credit | (1,333) | (859) | (536)
State rate change | (168) | (652) | 157
Goodwill impairment | 0 | 0 | 10,038
Other | (292) | 279 | (804)
Income Tax Expense (Benefit), Total | $ 8,752 | $ 3,897 | $ (12,276)

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible impairment loss. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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