Discontinued Operations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Interest in Consolidated Subsidiaries			$ 81,140
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax			39,491
Gregory Mountain Products, Inc. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration	84,135		84,135
Discontinued Operation, Transaction Fees	2,995
Proceeds from Divestiture of Interest in Consolidated Subsidiaries	81,140
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	39,491		39,491
Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation	19,933
Interest expense allocated to discontinued operations	$ 35	$ 302	$ 636	$ 697