Note 1 - Organization and Background	3 Months Ended
Mar. 31, 2021
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, Florida, Georgia, Illinois, Iowa, Kansas, Missouri, Nebraska, Nevada, 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 services, homebuilding, 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, Fiber is Fast, LLC. We completed an acquisition of an outdoor advertising business and entered the outdoor advertising industry on June 19, 2015. From 2015 through 2021, we have completed eighteen 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 July through November 2017 we completed the acquisition of two surety brokerage businesses and acquired a majority stake in a third surety brokerage business, thus expanding our operations in insurance. During the first quarter of 2020, we purchased the non-controlling interest in our third surety brokerage business from the non-controlling owner. 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. In our opinion, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of unaudited consolidated financial position and the unaudited consolidated results of operations for interim periods presented have been reflected herein. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year. Notes to the interim unaudited consolidated financial statements which would substantially duplicate the disclosures contained in the audited financial statements for the years ended December 31, 2020 and 2019 as reported in our Annual Report on Form 10-K, filed with the Securities and Exchange Commission, which we refer to as the “SEC,” on March 29, 2021, have been omitted.

Note 1 - Organization and Background

3 Months Ended

Mar. 31, 2021

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, Florida, Georgia, Illinois, Iowa, Kansas, Missouri, Nebraska, Nevada, 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 services, homebuilding, 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, Fiber is Fast, LLC.

We completed an acquisition of an outdoor advertising business and entered the outdoor advertising industry on June 19, 2015. From 2015 through 2021, we have completed eighteen 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 July through November 2017 we completed the acquisition of two surety brokerage businesses and acquired a majority stake in a third surety brokerage business, thus expanding our operations in insurance. During the first quarter of 2020, we purchased the non-controlling interest in our third surety brokerage business from the non-controlling owner.

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.

In our opinion, all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of unaudited consolidated financial position and the unaudited consolidated results of operations for interim periods presented have been reflected herein. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the full year. Notes to the interim unaudited consolidated financial statements which would substantially duplicate the disclosures contained in the audited financial statements for the years ended December 31, 2020 and 2019 as reported in our Annual Report on Form 10-K, filed with the Securities and Exchange Commission, which we refer to as the “SEC,” on March 29, 2021, have been omitted.