Discontinued Operations (Schedule of Operating Results) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	$ 10,283	$ 54,334	$ 19,774	$ 106,230
Income from operations of discontinued business before tax	2,760	6,434	4,776	12,991
Gain on disposition of discontinued operations	34,709		92,677
Income tax expense	$ 13,439	$ 2,220	$ 26,253	$ 4,262