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Note 7 - Related Party Transactions (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 50,000	$ 53,000
Notes Payable, Other Payables [Member]
Debt Instrument, Unamortized Discount, Total	199,000		$ 222,000
MHW SPV II, LLC [Member] | Notes Payable, Other Payables [Member]
Notes Payable, Related Parties	945,000
Debt Instrument, Unamortized Discount, Total	48,000
Interest Paid, Excluding Capitalized Interest, Operating Activities	33,000	31,000
MHW Partners [Member] | Notes Payable, Other Payables [Member]
Notes Payable, Related Parties	650,000
Debt Instrument, Unamortized Discount, Total	50,000
Interest Paid, Excluding Capitalized Interest, Operating Activities	$ 23,000	$ 21,000

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Amount, after accumulated amortization, of debt discount.

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