Equity (Common Stock Offering) (Details) - USD ($) $ in Thousands		9 Months Ended
	Aug. 10, 2016	Sep. 30, 2016	Sep. 30, 2015
Class of Stock [Line Items]
Proceeds from the issuance of Common Stock, net of underwriters’ discount		$ 702,765	$ 0
Common Stock [Member]
Class of Stock [Line Items]
Issuance of common stock (shares)	69,000,000	69,000,000
Proceeds from the issuance of Common Stock, net of underwriters’ discount	$ 702,500