Equity - Dividends and Distributions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Dividends paid to common shareholders	$ 18,200	$ 18,700	$ 37,181	$ 37,191
Distributions paid to OP unitholders	12,400	13,300	25,000	26,500
Private perpetual preferred unit distributions	$ 1,000	$ 200	$ 2,097	$ 468