Dividends and Distributions - Summary of Dividends Declared and Distributions Paid (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended														2 Months Ended								10 Months Ended	12 Months Ended			13 Months Ended	14 Months Ended
	Oct. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Jan. 31, 2018	Dec. 31, 2017	Oct. 31, 2017	Sep. 30, 2017	Jul. 31, 2017	Jun. 30, 2017	Apr. 30, 2017	Mar. 31, 2017	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Oct. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 31, 2019	Jan. 31, 2020
Dividends Payable [Line Items]
Dividend Per Share (in usd per share)																								$ 0.82	$ 0.74	$ 0.29
Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in usd per share)							$ 0.0186	$ 0.0730		$ 0.0730		$ 0.0730		$ 0.0730		$ 0.2000	$ 0.2000	$ 0.2000	$ 0.1875	$ 0.1875	$ 0.1875	$ 0.1396
Common Shares
Distributions Declared							$ 1,291						$ 5,053			$ 38,795	$ 38,764	$ 30,235	$ 28,218	$ 28,072	$ 27,250	$ 20,145					$ 104,976
Distributions Paid							1,291				$ 5,054					38,795	38,764	30,235	28,218	28,072	27,250	20,145
Distributions Paid
Distributions Declared							619	$ 5,054	$ 5,053										0	0	0	0				$ 20,214
Series B Preferred Shares - Fixed Dividend
Distributions Paid
Distributions Declared																											1,817
Restricted Stock Units, Expected to Vest | Participating Dividend
Common Shares
Distributions Paid	$ 170	$ 172	$ 142	$ 127	$ 118	$ 79																	$ 114
Restricted Stock Units, Not Expected to Vest | Participating Dividend
Common Shares
Distributions Paid																$ 7	$ 13	$ 15	$ 7	28	28	20					76,523
Subsequent Event | Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in usd per share)															$ 0.2000
Common Shares
Distributions Declared															$ 38,796													$ 146,590
Distributions Paid															$ 0													$ 135,443
Series A Preferred Shares | Series B Preferred Shares - Fixed Dividend
Distributions Paid
Distributions Paid																									$ 1	16
Series B Preferred Shares
Distributions Paid
Distributions Paid																										28,436
Series B Preferred Shares | Participating Dividend
Distributions Paid
Distributions Paid							619	$ 2,422	$ 2,421		$ 2,422		$ 2,421								0					9,686
Series B Preferred Shares | Series B Preferred Shares - Fixed Dividend
Distributions Paid
Distributions Declared							1,198
Distributions Paid							$ 1,198																			$ 18,750	$ 1,817
Series B Preferred Shares | Restricted Stock Units, Expected to Vest | Participating Dividend
Distributions Paid
Distributions Paid					$ 0	$ 0																	$ 0
Series B Preferred Shares | Restricted Stock Units, Not Expected to Vest | Participating Dividend
Distributions Paid
Distributions Paid																				$ 0	$ 0	$ 0