Note 11 - Capital Leases Payable (Details Textual)	12 Months Ended
Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Capital Leased Assets, Number of Units	7
Capital Leases, Buyout Option	$ 1
Capitalized Contract Cost, Net, Current	1,162,240
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments, Total		$ 1,046,115
Capital Leases, Future Minimum Payments, Interest Included in Payments		287,972
Capital Leases, Future Minimum Payments, Net Minimum Payments, Total		758,143
Capital Lease Obligations, Current	214,529	301,162
Capital Lease Obligations, Noncurrent	667,053	$ 456,981
Capital Lease Obligations [Member]
Debt Instrument, Periodic Payment, Total	$ 34,171

The amount would be paid for the equipment once the buyout option exercise upon lease termination.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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The number of units (items of property) under capital lease arrangements.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Amount of minimum lease payments for capital leases net of executory costs, which include amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current.

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Amount of the required periodic payments including both interest and principal payments.

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