Dividends and Distributions - Summary of Dividends Declared and Distributions Paid (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended													2 Months Ended										3 Months Ended		13 Months Ended		14 Months Ended
	Dec. 31, 2020	Oct. 31, 2020	May 31, 2020	Mar. 31, 2020	Dec. 31, 2019	Oct. 31, 2019	May 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Oct. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Jan. 31, 2018	Oct. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Apr. 30, 2019	Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jul. 31, 2020	Jul. 31, 2019	Dec. 31, 2020	Jan. 31, 2019	Jan. 31, 2020
Participating Dividend
Dividends Payable [Line Items]
Dividend Per Share (in usd per share)	$ 0.210												$ 0.0186	$ 0.2100	$ 0.2100	$ 0.2000	$ 0.2000		$ 0.2000	$ 0.1875	$ 0.1875	$ 0.1875	$ 0.1396	$ 0.2100	$ 0.2000
Common Shares
Distributions Declared	$ 53,820												$ 1,291	$ 43,282	$ 42,568	$ 38,796	$ 38,795		$ 30,235	$ 28,218	$ 28,072	$ 27,250	$ 20,145	$ 43,271	$ 38,764	$ 182,941	$ 104,976	$ 146,590
Distributions Paid	$ 0												1,291	43,282	42,568	38,796	38,795	$ 38,800	30,235	28,218	28,072	27,250	20,145	43,271	38,764	$ 167,086		$ 135,443
Participating Dividend | Series B Preferred Shares
Series B Preferred Shares
Distributions Declared													619							0	0	0	0
Distributions Paid													619									0
Series B Preferred Shares - Fixed Dividend | Series B Preferred Shares
Series B Preferred Shares
Distributions Declared													1,198														1,817
Distributions Paid													$ 1,198														1,817
Restricted Stock Units, Expected to Vest | Participating Dividend
Common Shares
Distributions Declared		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Distributions Paid		$ 231	$ 232	$ 233	$ 169	$ 170	$ 172	$ 142	$ 127	114	118	79
Restricted Stock Units, Expected to Vest | Participating Dividend | Series B Preferred Shares
Series B Preferred Shares
Distributions Declared										0	0	0
Distributions Paid										$ 0	$ 0	$ 0
Restricted Stock Units, Not Expected to Vest | Participating Dividend
Common Shares
Distributions Declared														0	0	0	0		0	0	0	0	0	0	0
Distributions Paid														$ 10	$ 10	$ 4	$ 7		$ 15	$ 7	28	28	20	$ 10	$ 13		$ 76,523
Restricted Stock Units, Not Expected to Vest | Participating Dividend | Series B Preferred Shares
Series B Preferred Shares
Distributions Declared																					0	0	0
Distributions Paid																					$ 0	$ 0	$ 0