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Note 17 - Special Purpose Acquisition Company | 6 Months Ended
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Jun. 30, 2022
Notes to Financial Statements |
Special Purpose Acquisition Company [Text Block] | NOTE 17. SPECIAL PURPOSE ACQUISITION COMPANY In October 2020, our subsidiary BOC Yellowstone LLC, which we refer to as “BOC Yellowstone,” served as sponsor for the underwritten initial public offering of a special purpose acquisition company named Yellowstone Acquisition Company, which we refer to as “Yellowstone.” Yellowstone sold in its public offering 13,598,898 units at a price of $10.00 per unit, each unit consisting of one share of Class A common stock and a redeemable warrant to purchase one-half of a share of Class A common stock at an exercise price of $11.50 per share. Between August and November 2020, we invested, through BOC Yellowstone, approximately $7.8 million through the purchase of 3,399,724 shares of Class B common stock and 7,719,779 non-redeemable private placement warrants, each warrant entitling us to purchase one share of Class A common stock at $11.50 per share. BOC Yellowstone, as the sponsor of Yellowstone and under the terms of the public offering, owned approximately 20% of Yellowstone's issued and outstanding common stock. The purpose of the offering was to pursue a business combination in an industry other than the three industries in which we currently own and operate businesses: outdoor advertising, surety insurance, and broadband services businesses. The Units were sold at a price of $10.00 per unit, generating gross proceeds to Yellowstone of $125,000,000, and traded on the NASDAQ Stock Market, LLC under the ticker symbol “YSACU”. After the securities comprising the units began separate trading, the shares of Class A common stock and warrants were listed on NASDAQ under the symbols “YSAC” and “YSACW,” respectively. On August 1, 2021, Yellowstone entered into a business combination agreement with Sky Harbour LLC (“SHG”), a developer of private aviation infrastructure focused on building, leasing and managing business aviation hangars. On September 14, 2021, our subsidiary BOC YAC Funding LLC completed the previously-announced investment of $55 million in Series B Preferred Units of SHG. In addition to our $55 million investment, we also agreed to provide to SHG an additional $45 million through the purchase of additional shares of Yellowstone Class A common stock at a price of $10 per share through a private placement investment (“PIPE”). On January 25, 2022, Yellowstone completed the previously announced proposed business combination with SHG following stockholder approval. Upon the consummation of the business combination, SHG became a consolidated subsidiary of Yellowstone and Yellowstone was renamed Sky Harbour Group Corporation, shares of which are now listed for trading on the New York Stock Exchange under the symbol “SKYH” and Sky Harbour warrants are also listed for trading on the New York Stock Exchange under the symbol "SKYH.WS". Also in connection with the business combination, we entered into a subscription agreement with Sky Harbour, pursuant to which Sky Harbour sold to us at the closing of the business combination 4,500,000 shares of Class A common stock at a price of $10 per share, for total cash consideration of $45,000,000. In connection with the business combination, we recognized a non-cash gain during the first quarter of fiscal 2022 of $24,977,740 related to our deconsolidation of Yellowstone, which is included within other income on our Consolidated Statement of Operations. Of the total gain recognized on deconsolidation, approximately $10,000,000 relates to the remeasurement of our retained investment in Sky Harbour via the Sponsor shares, Series B Preferred Units, and PIPE investment, each of which converted into shares of Sky Harbour's Class A common stock on the transaction date, and approximately $15,000,000 relates to the deconsolidation of Yellowstone's assets and liabilities as of the transaction date. The fair value of our retained investment at the deconsolidation date was measured based upon the observable trading price of Sky Harbour's Class A common stock. Subsequent to the business combination, we account for our 22.96% investment in Sky Harbour's Class A common stock under the equity method.

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