Equity (Common Stock Dividends) (Narrative) (Details) - $ / shares		12 Months Ended
	Aug. 05, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Quarterly dividend of common stock declared (in dollar per share)	$ 0.1375	$ 0.28	$ 1.03	$ 1.26
Annualized dividend rate (in dollars per share)	$ 0.55