CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Deficit [Member]	Parent [Member]	Non-Controlling Interests [Member]
Beginning balance (shares) at Dec. 31, 2019		30,871,246	215,369,197
Beginning balance at Dec. 31, 2019	$ 6,870,194	$ 309	$ 2,153	$ 13,260,577	$ (27,670)	$ (6,372,710)	$ 6,862,659	$ 7,535
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of OP Units to Common Stock (shares)			910
Conversion of OP Units to Common Stock	0			45			45	(45)
Redemption of Series F Preferred Units	(27)			(27)			(27)
Repurchases of Common Stock to settle tax obligation (shares)			(48,218)
Repurchases of Common Stock to settle tax obligation	(2,378)			(2,378)			(2,378)
Equity-based compensation, net (shares)			234,408
Equity-based compensation, net	2,855		$ 2	2,853			2,855
Distributions declared on common stock	(148,194)					(148,194)	(148,194)
Distributions to non-controlling interest holders	(105)							(105)
Dividend equivalents on awards granted under the Equity Plan	(1,628)					(1,628)	(1,628)
Distributions to preferred shareholders and unitholders	(12,947)					(12,928)	(12,928)	(19)
Net income	86,863					86,808	86,808	55
Other comprehensive income (loss)	(76,602)				(76,547)		(76,547)	(55)
Ending balance (shares) at Mar. 31, 2020		30,871,246	215,556,297
Ending balance at Mar. 31, 2020	6,718,031	$ 309	$ 2,155	13,261,070	(104,217)	(6,448,652)	6,710,665	7,366
Beginning balance (shares) at Dec. 31, 2019		30,871,246	215,369,197
Beginning balance at Dec. 31, 2019	6,870,194	$ 309	$ 2,153	13,260,577	(27,670)	(6,372,710)	6,862,659	7,535
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	241,885
Other comprehensive income (loss)	(69,388)
Ending balance (shares) at Sep. 30, 2020		18,871,246	218,248,428
Ending balance at Sep. 30, 2020	6,485,460	$ 189	$ 2,183	13,057,408	(97,008)	(6,484,455)	6,478,317	7,143
Beginning balance (shares) at Mar. 31, 2020		30,871,246	215,556,297
Beginning balance at Mar. 31, 2020	6,718,031	$ 309	$ 2,155	13,261,070	(104,217)	(6,448,652)	6,710,665	7,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchases of Common Stock to settle tax obligation	(25)			(25)			(25)
Equity-based compensation, net (shares)			13,415
Equity-based compensation, net	4,071		$ 1	4,070			4,071
Distributions declared on common stock	(82,997)					(82,997)	(82,997)
Distributions to non-controlling interest holders	(61)							(61)
Dividend equivalents on awards granted under the Equity Plan	(18)					(18)	(18)
Distributions to preferred shareholders and unitholders	(12,948)					(12,928)	(12,928)	(20)
Repurchase of convertible notes	(204)			(204)			(204)
Net income	56,105					56,074	56,074	31
Other comprehensive income (loss)	(1,893)				(1,892)		(1,892)	(1)
Ending balance (shares) at Jun. 30, 2020		30,871,246	215,569,712
Ending balance at Jun. 30, 2020	6,680,061	$ 309	$ 2,156	13,264,911	(106,109)	(6,488,521)	6,672,746	7,315
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock, net (shares)			2,659,332
Issuance of Common Stock, net	89,279		$ 27	89,252			89,279
Redemption of Limited Partners' Common OP Units	(149)							(149)
Redemption of Series F Preferred Stock/Units (shares)		(12,000,000)
Redemption of Series F Preferred Units	(300,052)	$ (120)		(299,932)			(300,052)
Repurchases of Common Stock to settle tax obligation (shares)			(250)
Repurchases of Common Stock to settle tax obligation	(8)			(8)			(8)
Equity-based compensation, net (shares)			19,634
Equity-based compensation, net	3,211		$ 0	3,211			3,211
Distributions declared on common stock	(84,026)					(84,026)	(84,026)
Distributions to non-controlling interest holders	(59)							(59)
Dividend equivalents on awards granted under the Equity Plan	(24)					(24)	(24)
Distributions to preferred shareholders and unitholders	(10,771)					(10,750)	(10,750)	(21)
Repurchase of convertible notes	(26)			(26)			(26)
Net income	98,917					98,866	98,866	51
Other comprehensive income (loss)	9,107				9,101		9,101	6
Ending balance (shares) at Sep. 30, 2020		18,871,246	218,248,428
Ending balance at Sep. 30, 2020	6,485,460	$ 189	$ 2,183	13,057,408	(97,008)	(6,484,455)	6,478,317	7,143
Beginning balance (shares) at Dec. 31, 2020		18,871,246	228,881,547
Beginning balance at Dec. 31, 2020	6,842,216	$ 189	$ 2,289	13,449,412	536	(6,617,380)	6,835,046	7,170
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock, net (shares)			35,710
Redemption of Series F Preferred Stock/Units (shares)		(4,000,000)
Redemption of Series F Preferred Units	(100,000)	$ (40)		(99,960)			(100,000)
Repurchases of Common Stock to settle tax obligation (shares)			(49,237)
Repurchases of Common Stock to settle tax obligation	(1,681)			(1,681)			(1,681)
Equity-based compensation, net (shares)			261,934
Equity-based compensation, net	2,892		$ 2	2,890			2,892
Distributions declared on common stock	(105,858)					(105,858)	(105,858)
Distributions to non-controlling interest holders	(70)							(70)
Dividend equivalents on awards granted under the Equity Plan	(1,581)					(1,581)	(1,581)
Distributions to preferred shareholders and unitholders	(6,525)					(6,506)	(6,506)	(19)
Net income	120,723					120,647	120,647	76
Other comprehensive income (loss)	98				98		98
Ending balance (shares) at Mar. 31, 2021		14,871,246	229,129,954
Ending balance at Mar. 31, 2021	6,750,214	$ 149	$ 2,291	13,350,661	634	(6,610,678)	6,743,057	7,157
Beginning balance (shares) at Dec. 31, 2020		18,871,246	228,881,547
Beginning balance at Dec. 31, 2020	6,842,216	$ 189	$ 2,289	13,449,412	536	(6,617,380)	6,835,046	7,170
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	260,239
Other comprehensive income (loss)	295
Ending balance (shares) at Sep. 30, 2021		0	229,152,001
Ending balance at Sep. 30, 2021	6,302,739	$ 0	$ 2,292	12,984,914	831	(6,692,338)	6,295,699	7,040
Beginning balance (shares) at Mar. 31, 2021		14,871,246	229,129,954
Beginning balance at Mar. 31, 2021	6,750,214	$ 149	$ 2,291	13,350,661	634	(6,610,678)	6,743,057	7,157
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of Series F Preferred Units	(41)			(41)			(41)
Repurchases of Common Stock to settle tax obligation (shares)			(18,042)
Repurchases of Common Stock to settle tax obligation	(100)			(100)			(100)
Equity-based compensation, net (shares)			37,704
Equity-based compensation, net	4,137		$ 0	4,137			4,137
Distributions declared on common stock	(105,867)					(105,867)	(105,867)
Distributions to non-controlling interest holders	(70)							(70)
Dividend equivalents on awards granted under the Equity Plan	(20)					(20)	(20)
Distributions to preferred shareholders and unitholders	(6,248)					(6,227)	(6,227)	(21)
Net income	77,903					77,896	77,896	7
Other comprehensive income (loss)	98				98		98
Ending balance (shares) at Jun. 30, 2021		14,871,246	229,149,616
Ending balance at Jun. 30, 2021	6,720,006	$ 149	$ 2,291	13,354,657	732	(6,644,896)	6,712,933	7,073
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemption of Series F Preferred Stock/Units (shares)		(14,871,246)
Redemption of Series F Preferred Units	(373,032)	$ (149)		(372,883)			(373,032)
Repurchases of Common Stock to settle tax obligation (shares)			(6,356)
Repurchases of Common Stock to settle tax obligation	(47)			(47)			(47)
Equity-based compensation, net (shares)			8,741
Equity-based compensation, net	3,188		$ 1	3,187			3,188
Distributions declared on common stock	(105,868)					(105,868)	(105,868)
Distributions to non-controlling interest holders	(70)							(70)
Dividend equivalents on awards granted under the Equity Plan	(26)					(26)	(26)
Distributions to preferred shareholders and unitholders	(3,124)					(3,113)	(3,113)	(11)
Net income	61,613					61,565	61,565	48
Other comprehensive income (loss)	99				99		99	0
Ending balance (shares) at Sep. 30, 2021		0	229,152,001
Ending balance at Sep. 30, 2021	$ 6,302,739	$ 0	$ 2,292	$ 12,984,914	$ 831	$ (6,692,338)	$ 6,295,699	$ 7,040