Equity (Narratives) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Equity [Abstract]
Distributions Declared Per Share (usd per share)	$ 0.1625	$ 0.1625	$ 0.4875	$ 0.4875
Distributions payable	$ 55,697		$ 55,697		$ 54,775
Dividend payable, date	Oct. 14, 2016
Distributions paid			165,296	$ 161,481
Dividends declared			$ 166,218	$ 162,537