Discontinued Operations (Schedule of Operating Results) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		0 Months Ended	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Jan. 11, 2012 Albany Door Systems [Member]	Mar. 31, 2011 Albany Door Systems [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales			$ 4,843	$ 45,128
Income from operations of discontinued business before tax			460	4,650
Gain on disposition of discontinued operations	57,968		57,968
Income tax expense	$ 12,221	$ 1,321	$ 12,221	$ 1,321