8. Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net loss (numerator for basic and diluted income per share)	$ (302)	$ (1,192)	$ (247)	$ (1,318)	$ (1,494)	$ (1,565)
Denominator:
Denominator for basic loss per share weighted average shares	12,495,707		12,720,112		12,525,407	12,740,798
Effect of dilutive securities:
Options and restricted stock units	0		0		0	0
Denominator
Denominator for diluted loss per share weighted average shares	12,495,707		12,720,112		12,525,407	12,740,798
Basic loss per share	$ (.02)		$ (.02)		$ (.12)	$ (.12)
Diluted loss per share	$ (.02)		$ (.02)		$ (.12)	$ (.12)