Shareholders' Equity (Details) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	50,000,000	50,000,000	50,000,000
Preferred Stock, Par Value Per Share	$ 0.01	$ 0.01	$ 0.01
Preferred Stock, Shares Issued	5,348,658	5,348,658	4,571,937
Preferred Stock, Liquidation Preference Per Share	$ 25.00	$ 25.00
Preferred Stock, Dividend Payment Terms		The Series A Preferred Stock pays a cumulative cash dividend equivalent to 8.50% of the $25.00 liquidation preference per share each year and the Series B Preferred Stock pays a cumulative cash dividend equivalent to 7.625% of the $25.00 liquidation preference per share each year.
Dividends declared per common share	$ 0.18
Series A Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	8,000,000	8,000,000
Preferred Stock, Shares Issued	2,300,000	2,300,000	2,300,000
Preferred Stock, Dividend Rate, Percentage		8.50%
Series B Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	7,000,000	7,000,000
Preferred Stock, Shares Issued	3,048,658	3,048,658	2,271,937
Preferred Stock, Dividend Rate, Percentage		7.625%
Preferred Stock
Class of Stock [Line Items]
Dividends Payable, Date to be Paid	Jul. 17, 2017
Dividends Payable, Date of Record	Jul. 01, 2017
Common Stock
Class of Stock [Line Items]
Dividends Payable, Date to be Paid	Jul. 28, 2017
Dividends Payable, Date of Record	Jul. 06, 2017