Dividends and Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	2 Months Ended				3 Months Ended		4 Months Ended	6 Months Ended		7 Months Ended
	Jan. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jul. 31, 2017	Apr. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Apr. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Jul. 31, 2018	Jul. 31, 2017
Dividends Payable [Line Items]
Dividend Per Share (in dollars per share)						$ 0.19	$ 0.07		$ 0.36	$ 0.14
Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in dollars per share)	$ 0.019		$ 0.140	$ 0.073	$ 0.073
Common Shares
Distributions Declared	$ 1,291		$ 20,145	$ 5,054	$ 5,053			$ 21,436				$ 10,107
Distributions Paid	1,291		20,145	0	5,053			$ 21,436				5,053
Series B Preferred Shares
Distributions Declared	619		$ 0	2,422	2,421							4,843
Distributions Paid	619			0	2,421							2,421
Fixed Dividend
Series B Preferred Shares
Distributions Declared	1,198			4,687	4,688							14,218
Distributions Paid	$ 1,198			$ 0	$ 4,688							$ 7,109
Subsequent Event | Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in dollars per share)		$ 0.19
Common Shares
Distributions Declared		$ 27,250									$ 48,686
Distributions Paid		0									21,377
Series B Preferred Shares
Distributions Declared		0
Distributions Paid		0
Subsequent Event | Fixed Dividend
Series B Preferred Shares
Distributions Declared											1,817
Distributions Paid											$ 1,817
Restricted Stock Units, Expected to Vest | Subsequent Event | Participating Dividend
Common Shares
Distributions Paid		(79)
Series B Preferred Shares
Distributions Paid		0
Restricted Stock Units, Not Expected to Vest | Subsequent Event | Participating Dividend
Common Shares
Distributions Paid		20
Series B Preferred Shares
Distributions Paid		$ 0