Equity - Cash Dividends (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended							9 Months Ended
	Oct. 30, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Distributions
Dividends per Common Share (in dollars per share)		$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.145	$ 0.132	$ 0.132	$ 0.435	$ 0.409
Total Dividends		$ 22,308	$ 22,176	$ 22,171	$ 22,031	$ 22,062	$ 17,206	$ 17,231	$ 66,655	$ 56,499
Subsequent Event
Distributions
Dividends per Common Share (in dollars per share)	$ 0.145