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Earnings/ (Loss) per share - Basic and Diluted (Table) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Earnings per share, Basic EPS [Abstract]:
Net income	$ 70,613	$ 47,213
Less paid and accrued earnings allocated to Preferred Stock	(7,313)	(5,719)
Net income available to common stockholders	$ 63,300	$ 41,494
Weighted average number of common shares, basic and diluted	74,876,866	74,800,000
Earnings per common share, basic and diluted	$ 0.85	$ 0.55

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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