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Note 1 - Organization and Background | 3 Months Ended
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Mar. 31, 2023
Notes to Financial Statements |
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] | NOTE 1. ORGANIZATION AND BACKGROUND Boston Omaha was organized on August 11, 2009 with present management taking over operations in February 2015. Our operations include (i) our outdoor advertising business with multiple billboards across Alabama, Arkansas, Florida, Georgia, Illinois, Iowa, Kansas, Missouri, Nebraska, Nevada, Oklahoma, South Dakota, Tennessee, Virginia, West Virginia and Wisconsin; (ii) our insurance business that specializes in surety bond underwriting and brokerage; (iii) our broadband business that provides high-speed broadband services to its customers, and (iv) our minority investments primarily in real estate, real estate services, private aviation infrastructure, asset management, and banking. Our billboard operations are conducted through our subsidiary, Link Media Holdings, LLC, our insurance operations are conducted through our subsidiary, General Indemnity Group, LLC, and our broadband operations are conducted through our subsidiary, Boston Omaha Broadband, LLC. We completed an acquisition of an outdoor advertising business and entered the outdoor advertising industry on June 19, 2015. From 2015 through 2022, we have completed more than twenty additional acquisitions of outdoor advertising businesses. On April 20, 2016, we completed an acquisition of a surety bond brokerage business. On December 7, 2016, we acquired a fidelity and surety bond insurance company. From 2017 through 2022, we completed four additional acquisitions of surety brokerage businesses. On March 10, 2020, we completed the acquisition of a rural broadband internet provider located in Arizona. On December 29, 2020, we completed the acquisition of a second broadband internet provider located in Utah. On April 1, 2022, we completed the acquisition of our third broadband internet provider located in Utah. On September 25, 2020, we filed a Registration Statement on Form S-1 with the Securities and Exchange Commission for a proposed initial public offering of units of a special purpose acquisition company, which we refer to as the “SPAC,” named Yellowstone Acquisition Company, which we refer to as “Yellowstone.” Yellowstone completed its initial public offering on October 26, 2020 and on January 25, 2022 completed a business combination with Sky Harbour Group and Yellowstone changed its name to Sky Harbour Group Corporation (see Note 8 for further discussion).

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