Equity - Schedule of Stock Redeemed and Retired (Details) - 7.55% Series D Cumulative Redeemable Preferred Stock [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Shares redeemed and retired				6,200,000
Redemption costs	[1]			$ 155,621
Deemed dividend		$ 0	$ 0	$ 5,230	[2]

[1] Includes accrued and unpaid dividends.

[2] Represents the difference between the redemption cost and historical GAAP cost. Accordingly, net income was adjusted for the deemed dividends to arrive at net income (loss) attributable to common shareholders.