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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

Preferred Stock

Class of Stock [Line Items]

Schedule of Dividends Payable

The following table presents the relevant dates with respect to such quarterly cash dividends on the Series B Preferred Stock commencing January 1, 2015 through December 31, 2017 and on each of the Series C Preferred Stock and Series D Preferred Stock from its respective time of original issuance through December 31, 2017:

						Cash Dividend Per Share
Declaration Date		Record Date		Payment Date		Series B Preferred Stock				Series C Preferred Stock				Series D Preferred Stock
December 7, 2017		January 1, 2018		January 15, 2018		$	0.484375			$	0.4921875			$	0.51111		(2)
September 14, 2017		October 1, 2017		October 15, 2017		0.484375				0.4921875				—
June 14, 2017		July 1, 2017		July 15, 2017		0.484375				0.4921875				—
March 16, 2017		April 1, 2017		April 15, 2017		0.484375				0.4921875				—
December 15, 2016		January 1, 2017		January 15, 2017		0.484375				0.4921875				—
September 15, 2016		October 1, 2016		October 15, 2016		0.484375				0.4921875				—
June 16, 2016		July 1, 2016		July 15, 2016		0.484375				0.4921875				—
March 18, 2016		April 1, 2016		April 15, 2016		0.484375				0.4921875				—
December 16, 2015		January 1, 2016		January 15, 2016		0.484375				0.4921875				—
September 18, 2015		October 1, 2015		October 15, 2015		0.484375				0.4921875				—
June 18, 2015		July 1, 2015		July 15, 2015		0.484375				0.4539100			(1)	—
March 18, 2015		April 1, 2015		April 15, 2015		0.484375				—				—

(1)Cash dividend for the partial quarterly period that began on April 22, 2015 and ended on July 14, 2015.

(2)Cash dividend for the partial quarterly period that began on October 13, 2017 and ended on January 14, 2018.

Common Stock

Class of Stock [Line Items]

Schedule of Dividends Payable

The following table presents cash dividends declared by the Company on its common stock with respect to each of the quarterly periods commencing January 1, 2015 and ended December 31, 2017:

Period		Declaration Date		Record Date		Payment Date		Cash Dividend Per Share
Fourth Quarter 2017		December 7, 2017		December 18, 2017		January 25, 2018		$	0.20
Third Quarter 2017		September 14, 2017		September 25, 2017		October 25, 2017		0.20
Second Quarter 2017		June 14, 2017		June 26, 2017		July 25, 2017		0.20
First Quarter 2017		March 16, 2017		March 27, 2017		April 25, 2017		0.20
Fourth Quarter 2016		December 15, 2016		December 27, 2016		January 26, 2017		0.24
Third Quarter 2016		September 15, 2016		September 26, 2016		October 28, 2016		0.24
Second Quarter 2016		June 16, 2016		June 27, 2016		July 25, 2016		0.24
First Quarter 2016		March 18, 2016		March 28, 2016		April 25, 2016		0.24
Fourth Quarter 2015		December 16, 2015		December 28, 2015		January 25, 2016		0.24
Third Quarter 2015		September 18, 2015		September 28, 2015		October 26, 2015		0.24
Second Quarter 2015		June 18, 2015		June 29, 2015		July 27, 2015		0.27
First Quarter 2015		March 18, 2015		March 30, 2015		April 27, 2015		0.27

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Tabular disclosure of all or some of the information related to dividends declared, but not paid, as of the financial reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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