Equity - Dividends and Distributions (Details) - USD ($) $ / shares in Units, $ in Thousands										12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 28, 2019	Mar. 29, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Partial dividend paid, per common share (in USD per share)	$ 0.035	$ 0.035	$ 0.035	$ 0.105	$ 0.105	$ 0.105	$ 0.105	$ 0.105	$ 0.105
Payments of ordinary dividends, common stock										$ 18,110	$ 37,181	$ 75,192
Distributions paid to OP unitholders										10,500	23,700	50,800
Private perpetual preferred unit distributions										$ 4,201	$ 4,197	$ 1,743
Dividends per share (in USD per share)										$ 0.105	$ 0.21	$ 0.42
Dividends paid, percent taxable as ordinary dividends										16.20%	100.00%	31.40%
Dividends paid, percent taxable as return of capital										83.80%	0.00%	68.60%