Goodwill and Intangible Assets (Goodwill Rollforward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013
Goodwill [Roll Forward]
Beginning balance	$ 1,137	$ 0
Ending balance	254,664	1,137
WBS [Member]
Goodwill [Roll Forward]
Goodwill acquired during period		$ 1,137
VNS [Member]
Goodwill [Roll Forward]
Goodwill acquired during period	9,287
Ending balance	9,287
RBI [Member]
Goodwill [Roll Forward]
Goodwill acquired during period	44,541
Ending balance	44,541
SBS [Member]
Goodwill [Roll Forward]
Goodwill acquired during period	199,699
Ending balance	$ 199,699