Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Summary of activity for discontinued operations
Revenue from discontinued operations	$ 23	$ 941
Operating loss before income taxes	(111)	(85)
Income tax benefit from discontinued operations	45	32
Loss on disposal, before income taxes	(11)	(42)
Income tax benefit on disposal	5	16
Loss from discontinued operations	$ (72)	$ (79)