Discontinued Operations and Assets Held for Sale - Results of Discontinued Operations (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
Discontinued Operations and Disposal Groups [Abstract]
Net sales	$ 0	$ 11,630	$ 0	$ 22,740
Income from discontinued operations before income tax expense	0	1,720	0	3,400
Income tax expense	0	(640)	0	(1,260)
Income from discontinued operations, net of income tax expense	$ 0	$ 1,080	$ 0	$ 2,140