Note 8 - Notes Payable - Principal Payments on Notes Payable (Details) - Notes Payable [Member]	Dec. 31, 2019 USD ($)
Related Party Notes [Member]
2020	$ 499,459
2021	533,479
2022	1,518,218
2023
2024
Total principal payments	2,551,156
Seller Note [Member]
2020	2,250,000
2021	2,250,000
2022	2,250,000
2023	1,125,000
2024
Total principal payments	$ 7,875,000

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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