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Note 6 - Business Acquisitions - Pro Forma Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Revenue | $ 14,498,147 | $ 15,169,813 | $ 42,790,250 | $ 46,201,767
Net Income (Loss) Attributable to Common Stockholders | $ (26,276,094) | $ 4,123,386 | $ 66,755,499 | $ (15,668,384)
Basic Net Income (Loss) per Share (in dollars per share) | $ (0.89) | $ 0.15 | $ 2.32 | $ (0.62)
Diluted Net Income (Loss) per Share (in dollars per share) | $ (0.89) | $ 0.15 | $ 2.32 | $ (0.62)
Basic Weighted Average Class A and Class B Common Shares Outstanding (in shares) | 29,576,115 | 27,231,115 | 28,751,500 | 25,145,700
Diluted Weighted Average Class A and Class B Common Shares Outstanding (in shares) | 29,576,115 | 27,271,014 | 28,825,428 | 25,145,700

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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