8. Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net loss (numerator for basic and diluted earnings per share)	$ 947	$ 1,318	$ 503	$ 50
Denominator:
Denominator for basic earnings per share weighted average shares	13,532,958	13,785,046	13,567,778	13,759,732
Effect of dilutive securities:
Options and restricted stock units	14,436	29,644	27,808	142,855
Denominator
Denominator for diluted earnings per share weighted average shares	13,547,394	13,814,690	13,595,586	13,902,587
Basic income per share	$ 0.07	$ 0.1	$ 0.04	$ 0
Diluted income per share	$ 0.07	$ 0.1	$ 0.04	$ 0