Divestiture Related Activities Divestitiure Related Activities Level 4 (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Disposal Group, Including Discontinued Operation, Revenue									$ 0	$ 1,613	$ 5,907
Proceeds from Divestiture of Businesses									6,900
(Losses) gains on divestitures									13,363	122,535	(3,350)
Impairment losses									(6,841)	(5,922)	(2,913)
Gains (losses) on divestitures and impairment charges, net									6,522	116,613	(6,263)
Disposal Group, Including Discontinued Operation, Costs and Expenses									0	(1,471)	(5,393)
Gain (Loss) on Disposition of Business									(390)	2,136	0
Disposal Group, Including Discontinued Operation, Other Expense									0	(2)	(1)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax									(390)	2,276	513
Disposal Group, Including Discontinued Operation, Provision for Income Tax									0	(90)	(107)
Income from discontinued operations, net	$ 0	$ 0	$ (390)	$ 0	$ 1,340	$ 884	$ (178)	$ 140	$ (390)	$ 2,186	$ 406