Note 8 - Debt: Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Long-term Debt	$ 1,303	$ 1,540
Current portion of long-term debt	(251)	(237)
Long-term debt, net of current portion	1,052	1,303
First Mortgage Note Payable
Debt Instrument, Periodic Payment	$ 23
Debt Instrument, Interest Rate, Effective Percentage	5.75%
Long-term Debt	$ 1,008	1,221
Second Mortgage Note Payable
Debt Instrument, Periodic Payment	$ 4
Debt Instrument, Interest Rate, Effective Percentage	5.99%
Long-term Debt	$ 295	$ 319

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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