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Note 16 - Subsequent Events (Details Textual) - USD ($)				1 Months Ended	9 Months Ended
	Oct. 01, 2019	May 15, 2018	Mar. 06, 2018	Oct. 25, 2019	Sep. 30, 2019	Sep. 30, 2018
Payments to Acquire Property, Plant, and Equipment, Total					$ 2,226,229	$ 2,676,175
Subsequent Event [Member] | Bilboards in Missouri [Member]
Payments to Acquire Property, Plant, and Equipment, Total	$ 1,337,685
Business Combination, Amount Held Back and Disbursed	$ 380,547
Common Class A [Member]
Stock Issued During Period, Shares, New Issues		3,137,768	3,300,000
Common Class A [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues				7,400
Proceeds from Issuance of Common Stock, Net				$ 144,707

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- Definition

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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Number of new stock issued during the period.

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