9. Income per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Numerator:
Net income (loss) (numerator for basis and diluted earnings per share)	$ 336	$ 884	$ 1,246	$ (401)	$ 136	$ 914	$ (855)	$ (688)	$ 2,065	$ (493)	$ (660)
Denominator:
Denominator for basic earnings per share weighted average shares									13,542,305	13,513,939	13,479,601
Effect of dilutive securities:
Stock Options									2,231
Denominator
Denominator for diluted earnings per share weighted average shares									13,544,536	13,513,939	13,479,601
Basic income (loss) per share	$ 0.03	$ 0.07	$ 0.09	$ (0.03)	$ 0.01	$ 0.07	$ (0.06)	$ (0.05)	$ 0.15	$ (0.04)	$ (0.05)
Diluted income (loss) per share	$ 0.03	$ 0.07	$ 0.09	$ (0.03)	$ 0.01	$ 0.07	$ (0.06)	$ (0.05)	$ 0.15	$ (0.04)	$ (0.05)