Discontinued Operations Discontinued Operations - Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 0	$ 11,140	$ (4,740)	$ 28,590
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue		157,870	300,900	488,050
Disposal Group, Including Discontinued Operation, Costs of Goods Sold		(119,700)	(227,860)	(366,740)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)		38,170	73,040	121,310
Disposal Group, Including Discontinued Operations, Selling, General and Administrative Expenses		(27,100)	(72,360)	(83,090)
Disposal Group, Including Discontinued Operation, Operating Income (Loss)		11,070	680	38,220
Disposal Group, Including Discontinued Operation, Interest Expense		(1,280)	(2,540)	(3,960)
Disposal Group, Including Discontinued Operation, Other Expense		6,080	(1,970)	4,870
Disposal Group, Including Discontinued Operations, Nonoperating Income (Expense)		4,800	(4,510)	910
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		15,870	(3,830)	39,130
Discontinued Operation, Tax Effect of Discontinued Operation		(4,730)	(910)	(10,540)
Income (loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest		$ 11,140	$ (4,740)	$ 28,590