Discontinued Operations (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operations
After-tax income (loss) from discontinued operations	$ (76,000)	$ 355,000	$ (4,018,000)
Interest expense allocated to discontinued operations	0
Revenue and pre-tax income (loss) related to discontinued operations
Revenue	49,000	4,668,000	23,366,000
Pre-tax income (loss)	(195,000)	567,000	(6,727,000)
Operation located in Delaware
Discontinued Operations
Impairment of intangible assets			1,600,000
After-tax income (loss) from discontinued operations	(100,000)	100,000	(4,000,000)
Income associated with the reduction of estimated liabilities associated with the sale and shutdown of previous discontinued operations		$ 300,000