Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Summary of activity for discontinued operations
Revenue from discontinued operations	$ 112	$ 743	$ 519	$ 2,257
Operating loss before income taxes	(158)	(32)	(389)	(487)
Income tax benefit from discontinued operations	59	14	146	178
Gain (loss) on disposal, before income taxes	57	(3)	181	230
Income tax expense (benefit) on disposal	(21)	1	(68)	(84)
Loss from discontinued operations	$ (63)	$ (20)	$ (130)	$ (163)