Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net Loss Attributable to Parent	$ (40,573)	$ (3,686)	$ (50,538)	$ (16,816)
Dividends	0	6,374	0	12,749
Dividends attributable to common stockholders under the two class method	0	6,164	0	12,324
Net loss available to common stockholders, basic	$ (40,573)	$ (3,896)	$ (50,538)	$ (17,241)
Weighted Average Number of Shares Outstanding, Basic and Diluted	50,015,869	49,423,472	49,970,709	49,318,423
Earnings Per Share, Basic and Diluted	$ (0.81)	$ (0.08)	$ (1.01)	$ (0.35)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	880,974	71,468	2,214,674	71,468