Note 4 - Net Earnings Per Share - Computation of Basic and Diluted Net Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Loss (a)	$ (148)	$ (53)	$ (31)	$ (803)
Weighted average outstanding shares of common stock (in shares)	2,042	2,042	2,042	2,042
Dilutive potential common shares from employee stock options (in shares)
Common stock and common stock equivalents (in shares)	2,042	2,042	2,042	2,042
Basic net loss per share (a)/(b) (in dollars per share)	$ (0.07)	$ (0.03)	$ (0.02)	$ (0.39)
Diluted net loss per share (a)/(c) (in dollars per share)	$ (0.07)	$ (0.03)	$ (0.02)	$ (0.39)