Net Loss Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2009
Numerator:
Loss from continuing operations	$ (2,990)	$ (1,412)	$ (5,517)	$ (1,395)
Gain from discontinued operations, net of tax	0	0	153	61	187
Net Loss used in computing basic and diluted net loss per share	$ (2,990)	$ (1,412)	$ (5,364)	$ (1,334)
Denominator:
Shares used in computation of basic and diluted net loss per share (weighted average common shares outstanding)	27,658	28,918	27,885	28,595
Basic and diluted net loss per share from:
Continuing operations	$ (0.11)	$ (0.05)	$ (0.20)	$ (0.05)
Discontinued operations	$ 0.00	$ 0.00	$ 0.01	$ 0.00
Total	$ (0.11)	$ (0.05)	$ (0.19)	$ (0.05)