CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Preferred Shares [Member]	Common Shares [Member]	Additional Paid-in Capital [Member]	Accumulated Distributions in Excess of Net Income [Member]	Deferred Compensation Obligation [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock at Cost [Member]	Non-Controlling Interests [Member]
Beginning Balance at Dec. 31, 2022	$ 2,092,622	$ 175,000	$ 21,437	$ 5,974,216	$ (4,046,370)	$ 5,025	$ 9,038	$ (51,518)	$ 5,794
Issuance of common shares related to stock plans	6	0	0	6	0	0	0	0	0
Repurchase of common shares	(26,611)	0	0	0	0	0	0	(26,611)	0
Stock-based compensation, net	(3,009)	0	0	(8,133)	0	30	0	5,094	0
Distributions to non-controlling interests	(18)	0	0	0	0	0	0	0	(18)
Dividends declared-common shares	(27,292)	0	0	0	(27,292)	0	0	0	0
Dividends declared-preferred shares	(2,789)	0	0	0	(2,789)	0	0	0	0
Comprehensive income (loss)	12,102	0	0	0	15,284	0	(3,200)	0	18
Ending Balance at Mar. 31, 2023	2,045,011	175,000	21,437	5,966,089	(4,061,167)	5,055	5,838	(73,035)	$ 5,794
Beginning Balance at Dec. 31, 2023	2,175,543	175,000	21,437	5,974,904	(3,934,736)	5,167	6,121	(72,350)
Stock-based compensation, net	(488)	0	0	(3,238)	0	(115)	0	2,865
Dividends declared-common shares	(27,372)	0	0	0	(27,372)	0	0	0
Dividends declared-preferred shares	(2,789)	0	0	0	(2,789)	0	0	0
Comprehensive income (loss)	(20,950)	0	0	0	(23,552)	0	2,602	0
Ending Balance at Mar. 31, 2024	$ 2,123,944	$ 175,000	$ 21,437	$ 5,971,666	$ (3,988,449)	$ 5,052	$ 8,723	$ (69,485)