Note 6 - Loans Payable (Details Textual) - Loan payable to Bank Direct Capital Finance [Member] - Loans Payable [Member] - USD ($)	1 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Debt Instrument, Face Amount	$ 1,300,000	$ 1,100,000
Debt Instrument, Interest Rate, Stated Percentage	3.37%	4.26%
Debt Instrument, Periodic Payment, Total	$ 147,000	$ 117,000
Loans Payable to Bank, Total	$ 300,000

Face (par) amount of debt instrument at time of issuance.

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Period Type:	instant

- Definition

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

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- Definition

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

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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