Dividends and Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended						2 Months Ended							3 Months Ended		9 Months Ended		10 Months Ended	11 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Jan. 31, 2018	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Oct. 31, 2018	Oct. 31, 2019
Dividends Payable [Line Items]
Dividend Per Share (in USD per share)														$ 0.2017	$ 0.1929	$ 0.6159	$ 0.5522
Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in USD per share)						$ 0.0186		$ 0.2000	$ 0.2000	$ 0.1875	$ 0.1875	$ 0.1875	$ 0.1396
Common Shares
Distributions Declared						$ 1,291		$ 38,764	$ 30,235	$ 0	$ 28,072	$ 27,250	$ 20,145					$ 76,758
Distributions Paid						1,291		38,764	30,235	28,218	0	27,250	20,145					48,537
Participating Dividend | Dividend equivalents accrued on unvested restricted stock units to be paid when the awards vest.
Common Shares
Distributions Paid	$ 172	$ 142	$ 127	$ 118	$ 79
Participating Dividend | Dividend equivalents paid on unvested restricted stock units that are not expected to vest (recognized as additional compensation).
Common Shares
Distributions Paid								$ 13	$ 15	$ 7		28	20
Series B Preferred Stock
Series B Preferred Shares
Distributions Declared																		1,817
Distributions Paid																		$ 1,817
Series B Preferred Stock | Participating Dividend
Series B Preferred Shares
Distributions Declared						619					0	0	0
Distributions Paid						619					$ 0	0
Series B Preferred Stock | Participating Dividend | Dividend equivalents accrued on unvested restricted stock units to be paid when the awards vest.
Series B Preferred Shares
Distributions Paid				$ 0	$ 0
Series B Preferred Stock | Participating Dividend | Dividend equivalents paid on unvested restricted stock units that are not expected to vest (recognized as additional compensation).
Series B Preferred Shares
Distributions Paid												$ 0	$ 0
Series B Preferred Stock | Fixed Dividend
Series B Preferred Shares
Distributions Declared						1,198
Distributions Paid						$ 1,198
Subsequent Event | Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in USD per share)							$ 0.2000
Common Shares
Distributions Declared							$ 38,795												$ 107,794
Distributions Paid							$ 0												$ 96,811