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Note 2 - Summary of Significant Accounting Policies (Details Textual)					12 Months Ended
	Oct. 01, 2021 USD ($)	Jan. 01, 2021	Oct. 26, 2020 shares	Oct. 01, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Accounts Receivable, Allowance for Credit Loss, Current					$ 121,022	$ 328,522
Number of Reporting Units					4
Goodwill, Impairment Loss	$ 0			$ 0
Goodwill, Ending Balance					$ 151,336,976	124,446,446
Ceded Premiums Earned					652,885	595,750
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total					0	0
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total					0	0
Yellowstone Acquisition Company [Member] | Common Class A [Member] | IPO [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares			13,598,898
Tammy Lynn Outdoor, LLC, Key Outdoor, Inc and Waitt Outdoor, LLC [Member]
Goodwill, Ending Balance					$ 25,400,000	$ 18,150,000
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)					4 years
Finite-Lived Intangible Asset, Useful Life (Year)		2 years			2 years
Lessor, Operating Lease, Term of Contract (Month)						1 month
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)					20 years
Finite-Lived Intangible Asset, Useful Life (Year)		50 years			50 years
Lessor, Operating Lease, Term of Contract (Month)						3 years
Billboard Rentals [Member]
Accounts Receivable, Allowance for Credit Loss, Current					$ 110,721	$ 217,871
Revenue from Contract with Customer, Including Assessed Tax					31,499,235	28,260,964
Broadband Services [Member]
Accounts Receivable, Allowance for Credit Loss, Current					10,301	110,651
Revenue from Contract with Customer, Including Assessed Tax					15,234,266	3,836,537
Production Services [Member]
Revenue from Contract with Customer, Including Assessed Tax					$ 1,677,415	$ 1,373,339

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