Shareholders' Equity (Details) - $ / shares	1 Months Ended																								3 Months Ended								12 Months Ended
	Dec. 31, 2019		Nov. 30, 2019		Oct. 31, 2019		Sep. 30, 2019		Aug. 31, 2019		Jul. 31, 2019		Jun. 30, 2019		May 31, 2019		Apr. 30, 2019		Mar. 31, 2019		Feb. 28, 2019		Jan. 31, 2019		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	50,000,000																								50,000,000								50,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01																								$ 0.01								$ 0.01
Stock Issued During Period, Shares, Reverse Stock Splits																																	49,210,493
Preferred Stock, Shares Issued	6,788,330																								6,788,330				5,954,594				6,788,330
Preferred Stock, Liquidation Preference Per Share	$ 25.00																								$ 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.
Stockholders' Equity Note, Stock Split, Conversion Ratio																																	3
Dividends Payable, Date Declared, Month and Year	Dec. 11, 2019		Nov. 12, 2019		Oct. 11, 2019		Sep. 11, 2019		Aug. 12, 2019		Jul. 08, 2019		Jun. 06, 2019		May 16, 2019		Apr. 10, 2019		Mar. 12, 2019		Jan. 28, 2019		Jan. 07, 2019
Common Stock, Dividends, Per Share, Declared	$ 0.15	[1]	$ 0.15	[1]	$ 0.15	[1]	$ 0.15	[1]	$ 0.15	[1]	$ 0.18	[1]	$ 0.18	[1]	$ 0.18	[1]	$ 0.18	[1]	$ 0.18	[1]	$ 0.18	[1]	$ 0.18	[1]	$ 0.45	$ 0.48	$ 0.54	$ 0.54	$ 0.54	$ 0.54	$ 0.54	$ 0.54
Series A Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	8,000,000																								8,000,000								8,000,000
Preferred Stock, Dividend Rate, Percentage																																	8.50%
Preferred Stock, Shares Issued	2,300,000																								2,300,000				2,300,000				2,300,000
Preferred Stock, Dividends Per Share, Declared																									$ 0.053125
Series B Preferred Stock
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	7,000,000																								7,000,000								7,000,000
Preferred Stock, Dividend Rate, Percentage																																	7.625%
Preferred Stock, Shares Issued	4,488,330																								4,488,330				3,654,594				4,488,330
Preferred Stock, Dividends Per Share, Declared																									$ 0.4765625
Common Stock
Class of Stock [Line Items]
Dividends Payable, Date of Record	Dec. 23, 2019		Nov. 22, 2019		Oct. 21, 2019		Sep. 23, 2019		Aug. 22, 2019		Jul. 22, 2019		Jun. 26, 2019		May 28, 2019		Apr. 22, 2019		Mar. 22, 2019		Feb. 14, 2019		Jan. 18, 2019
Dividends Payable, Date to be Paid	Jan. 02, 2020		Dec. 02, 2019		Nov. 01, 2019		Oct. 01, 2019		Sep. 03, 2019		Aug. 01, 2019		Jul. 03, 2019		Jun. 07, 2019		May 01, 2019		Apr. 01, 2019		Feb. 28, 2019		Jan. 31, 2019

[1] Amounts declared have been adjusted to reflect the effect of the 1-for-3 reverse stock split.