Discontinued Operations (Income (Loss) from Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]
Net sales									$ 103,392	$ 104,154	$ 164,043
Operating income									16,423	9,188	18,388
Interest and other expense									(9)	(141)	(127)
Tax provision									(6,479)	(3,258)	(6,025)
Income from discontinued operations, net of tax	1,164	2,290	3,667	2,856	1,800	3,978	3,455	11,455	9,935	5,789	12,236
Gain on disposal of assets									71	27,573	21
Tax provision									(29)	(12,674)	0
Gain on disposal of assets, net of tax									42	14,899	21
Net income from discontinued operations									$ 9,977	$ 20,688	$ 12,257