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Note 10 - Convertible Notes Payable (Details Textual) - USD ($)			3 Months Ended
	Jun. 14, 2019	Apr. 04, 2019	Jun. 30, 2019
Stock Issued During Period, Shares, Commitment Fees	200,000	80,000	300,000
Stock to be Issued Monthly, Shares, Payment of Commitment Fees		10,000
Stock Returned to Company, Prepayment of Debt Covenant			180,000
Adjustments to Additional Paid in Capital, Commitment Fee Adjustment			$ 270,000
Convertible Debentures [Member]
Proceeds from Issuance of Debt		$ 550,000
Debt Instrument, Convertible, Conversion Price		$ 1.50
Debt Instrument, Discount Percentage		7.00%
Debt Instrument, Unamortized Discount, Total		$ 40,000
Debt Instrument, Number of Additional Borrowings Allowed		2
Debt Instrument, Additional Borrowings Allowed Amount		$ 550,000
Debt Agreement, Maximum Borrowing Capacity		1,020,000
Debt Instrument, Fee Amount		120,000
Monthly Commitment Fee		$ 15,000
Convertible Debentures [Member] | Minimum [Member]
Debt Instrument, Convertible, Premium Payment Percentage		5.00%
Convertible Debentures [Member] | Maximum [Member]
Debt Instrument, Convertible, Premium Payment Percentage		25.00%
Convertible Redeemable Note [Member]
Proceeds from Issuance of Debt	$ 157,000
Debt Instrument, Convertible, Conversion Price	$ 1.50
Debt Instrument, Fee Amount	$ 30,000
Debt Instrument, Interest Rate, Stated Percentage	10.00%
Stock Returned to Company, Prepayment of Debt Covenant	180,000
Convertible Redeemable Note [Member] | Minimum [Member]
Debt Instrument, Convertible, Premium Payment Percentage	10.00%
Convertible Redeemable Note [Member] | Maximum [Member]
Debt Instrument, Convertible, Premium Payment Percentage	30.00%
Convertible Debt [Member]
Debt Instrument, Unamortized Discount, Total			24,533
Debt Instrument, Fee Amount			450,000
Debt Issuance Costs, Net, Total			180,000
Legal Fees			$ 17,000

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- Definition

Amount of decrease in additional paid in capital (APIC) resulting from commitment fee adjustment.

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Percentage premium on principal of convertible debt instrument paid at time of redemption.

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The number of additional borrowings allowed under the debt instrument.

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Number of shares that will be returned to the company if the debt is repaid before maturity date.

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The price per share of the conversion feature embedded in the debt instrument.

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Amount of the fee that accompanies borrowing money under the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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