Segment Information (Reconciliation of Interest Expense from Segments to Consolidated) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Interest expense	$ 142,863	$ 96,700	$ 124,307
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Interest expense	$ 142,863	$ 96,700	$ 124,307