Note 9 - Income Taxes: Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Text Block [Abstract]
Income tax benefit at U.S. federal statutory rate	$ 791	$ 466
State tax benefit (provision) (net of federal income tax benefit)	116	48
Change in valuation allowance attributable to operations	(3,114)	(25,093)
Change in effective tax rate	111	22,311
Stock compensation	30	570
True-up adjustments and expiration of tax carryforwards and credits	2,105	1,568
Other, net	(18)	19
Income tax provision (benefit)	$ 21	$ (111)