Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Statement of Cash Flows [Abstract]
Goodwill	$ 1,788,640	$ 1,786,225	$ 1,024,335	$ 764,305