Net Loss Per Share (Details) (USD $) In Thousands, except Per 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	Dec. 31, 2009
Numerator:
Loss from continuing operations	$ (200)	$ (2,990)	$ (2,308)	$ (219)	$ (270)	$ (1,412)	$ (1,328)	$ 1,345	$ (5,717)	$ (1,665)	$ (6,057)
Net income from discontinued operations (net of tax)	0	0	153	0	0	0	18	43	153	61	130	187
Net Loss used in computing basic and diluted net loss per share	$ (200)	$ (2,990)	$ (2,155)	$ (219)	$ (270)	$ (1,412)	$ (1,310)	$ 1,388	$ (5,564)	$ (1,604)	$ (5,927)
Denominator:
Shares used in computation of basic and diluted net loss per share (weighted average common shares outstanding)									27,735	28,564	28,113
Basic and diluted net loss per share:
Continuing operations									$ (0.21)	$ (0.06)	$ (0.22)
Discontinued operations									$ 0.01	$ 0.00	$ 0.01
Net loss									$ (0.20)	$ (0.06)	$ (0.21)