Equity Equity (Aggregate Shares Purchased) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Stock Repurchased During Period, Shares	4,015,866	62,909	966,700
Stock Repurchased During Period, Value	$ 103,874	$ 1,343	$ 46,052
Treasury Stock Acquired, Average Cost Per Share	$ 25.87	$ 21.35	$ 47.64