Benefit Plans - Shares Granted to Certain Employees and Trustees (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020	Dec. 31, 2019
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)			443,359	552,121
Measurement period (in years)	3 years
Number of shares vested (in shares)	266,812	552,121
Index Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	407,611	282,720
Value per share granted (usd per share)	$ 6.96	$ 9.40
Peer Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	407,606	282,715
Value per share granted (usd per share)	$ 6.50	$ 8.78
Non-vested Common Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (in shares)	376,480	295,230
Grant date fair value (usd per share)	$ 4,010	$ 4,304
Vesting period (in years)	3 years