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
	Jun. 30, 2018	Mar. 31, 2018	Jan. 31, 2018	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Oct. 31, 2018	Oct. 31, 2017
Dividends Payable [Line Items]
Dividend Per Share (in dollars per share)										$ 0.19	$ 0.07	$ 0.54	$ 0.22
Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in dollars per share)			$ 0.019		$ 0.19	$ 0.140	$ 0.073	$ 0.073	$ 0.073
Common Shares
Distributions Declared			$ 1,291		$ 27,250	$ 20,145	$ 5,053	$ 5,054	$ 5,053						$ 15,160
Distributions Paid			1,291		27,246	20,145	0	5,054	5,053						10,107
Series B Preferred Shares
Distributions Declared			619		0	0	2,421	2,422	2,421						7,264
Distributions Paid			619		0		0	2,422	2,421						4,843
Participating Dividend | Restricted Stock Units, Expected to Vest
Common Shares
Distributions Paid		$ (79)
Series B Preferred Shares
Distributions Paid		$ 0
Participating Dividend | Restricted Stock Units, Not Expected to Vest
Common Shares
Distributions Paid	$ (114)				28	20
Series B Preferred Shares
Distributions Paid	$ 0				$ 0	$ 0
Participating Dividend | Subsequent Event
Dividends Payable [Line Items]
Dividend Per Share (in dollars per share)				$ 0.19
Common Shares
Distributions Declared				$ 28,072										$ 76,758
Distributions Paid														48,537
Series B Preferred Shares
Distributions Declared				0
Participating Dividend | Subsequent Event | Restricted Stock Units, Not Expected to Vest
Common Shares
Distributions Paid				$ 0
Series B Preferred Shares - Fixed Dividend
Series B Preferred Shares
Distributions Declared			1,198				4,688	4,687	4,688						21,327
Distributions Paid			$ 1,198				$ 0	$ 4,687	$ 4,688						$ 14,218
Series B Preferred Shares - Fixed Dividend | Subsequent Event
Series B Preferred Shares
Distributions Declared														1,817
Distributions Paid														$ 1,817