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	Dec. 31, 2011
Discontinued Operations and Disposal Groups [Abstract]
Revenue	$ 0	$ 170,967	$ 0	$ 484,350
Gain (loss) on sale, net of taxes	(634)	(65,375)	1,226	(66,040)
Earnings (loss) from operations before taxes	(385)	17,109	(1,497)	44,078
Benefit (provision) for income taxes	(148)	(2,892)	(461)	1,489
(Loss) earnings from discontinued operations, net of tax	(1,167)	(51,158)	(732)	(20,473)
After-tax goodwill impairment charge		76,072		76,072
Assets of Discontinued Operations
Current assets	3,188		3,188		2,832
Non-current assets	297		297		1,609
Total assets of discontinued operations	3,485		3,485		4,441
Liabilities of Discontinued Operations
Current liabilities	9,066		9,066		31,592
Non-current liabilities	87,850		87,850		88,325
Total liabilities of discontinued operations	$ 96,916		$ 96,916		$ 119,917