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, 2022	2,092,622	175,000	21,437	5,974,216	(4,046,370)	5,025	9,038	(51,518)	5,794
Comprehensive income (loss)	21,742
Ending Balance at Jun. 30, 2023	2,024,698	175,000	21,437	5,971,918	(4,085,897)	4,941	10,125	(72,826)	0
Beginning 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
Issuance of common shares related to stock plans	7	0	0	7	0	0	0	0	0
Stock-based compensation, net	1,858	0	0	1,763	0	(114)	0	209	0
Repurchase of OP units	(1,735)	0	0	4,059	0	0	0	0	(5,794)
Dividends declared-common shares	(27,294)	0	0	0	(27,294)	0	0	0	0
Dividends declared-preferred shares	(2,789)	0	0	0	(2,789)	0	0	0	0
Comprehensive income (loss)	9,640	0	0	0	5,353	0	4,287	0	0
Ending Balance at Jun. 30, 2023	2,024,698	175,000	21,437	5,971,918	(4,085,897)	4,941	10,125	(72,826)	$ 0
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)
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)
Comprehensive income (loss)	217,144
Ending Balance at Jun. 30, 2024	2,334,099	175,000	21,437	5,973,663	(3,780,374)	4,937	8,572	(69,136)
Beginning Balance at Mar. 31, 2024	2,123,944	175,000	21,437	5,971,666	(3,988,449)	5,052	8,723	(69,485)
Stock-based compensation, net	2,231	0	0	1,997	0	(115)	0	349
Dividends declared-common shares	(27,381)	0	0	0	(27,381)	0	0	0
Dividends declared-preferred shares	(2,789)	0	0	0	(2,789)	0	0	0
Comprehensive income (loss)	238,094	0	0	0	238,245	0	(151)	0
Ending Balance at Jun. 30, 2024	$ 2,334,099	$ 175,000	$ 21,437	$ 5,973,663	$ (3,780,374)	$ 4,937	$ 8,572	$ (69,136)