CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Parent [Member]	Non-Controlling Interests [Member]
Beginning balance (shares) at Dec. 31, 2018		42,834,138	967,515,165
Beginning balance at Dec. 31, 2018	$ 7,300,144	$ 428	$ 9,675	$ 12,615,472	$ (1,280)	$ (5,467,236)	$ 7,157,059	$ 143,085
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock, net (shares)			3,309,808
Issuance of Common Stock, net	27,544		$ 33	27,511			27,544
Conversion of OP Units to Common Stock	0			(26)			(26)	26
Conversion of Series F Preferred Units to Series F Preferred Stock (shares)		37,108
Conversion of Series F Preferred Units to Series F Preferred Stock	0	$ 1		922			923	(923)
Repurchases of Common Stock to settle tax obligation (shares)			(199,083)
Repurchases of Common Stock to settle tax obligation	(1,595)		$ (2)	(1,593)			(1,595)
Equity-based compensation, net (shares)			950,487
Equity-based compensation, net	2,872		$ 10	2,862			2,872
Contributions from non-controlling interest holders	64							64
Distributions declared on Common Stock — $0.55 per common share	(133,480)					(133,480)	(133,480)
Distributions to non-controlling interest holders	(3,262)							(3,262)
Dividend equivalents on awards granted under the Equity Plan	(1,222)					(1,222)	(1,222)
Distributions to preferred shareholders and unitholders	(17,973)					(17,940)	(17,940)	(33)
Net income (loss)	70,971					69,304	69,304	1,667
Other comprehensive income (loss)	(11,189)				(10,922)		(10,922)	(267)
Ending balance (shares) at Mar. 31, 2019		42,871,246	971,576,377
Ending balance at Mar. 31, 2019	7,232,874	$ 429	$ 9,716	12,645,148	(12,202)	(5,550,574)	7,092,517	140,357
Beginning balance (shares) at Dec. 31, 2018		42,834,138	967,515,165
Beginning balance at Dec. 31, 2018	7,300,144	$ 428	$ 9,675	12,615,472	(1,280)	(5,467,236)	7,157,059	143,085
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions payable relinquished	6,429
Net income (loss)	363,255
Other comprehensive income (loss)	(27,398)
Ending balance (shares) at Jun. 30, 2019		42,871,246	973,385,899
Ending balance at Jun. 30, 2019	7,352,127	$ 429	$ 9,734	12,655,018	(28,026)	(5,416,759)	7,220,396	131,731
Beginning balance (shares) at Mar. 31, 2019		42,871,246	971,576,377
Beginning balance at Mar. 31, 2019	7,232,874	$ 429	$ 9,716	12,645,148	(12,202)	(5,550,574)	7,092,517	140,357
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock, net (shares)			1,773,456
Issuance of Common Stock, net	14,534		$ 18	14,516			14,534
Repurchases of Common Stock to settle tax obligation	(9)			(9)			(9)
Equity-based compensation, net (shares)			36,066
Equity-based compensation, net	3,883			3,883			3,883
Distributions declared on Common Stock — $0.55 per common share	(133,841)					(133,841)	(133,841)
Distributions to non-controlling interest holders	(3,264)							(3,264)
Dividend equivalents on awards granted under the Equity Plan	(44)					(44)	(44)
Distributions to preferred shareholders and unitholders	(17,973)					(17,958)	(17,958)	(15)
Distributions payable relinquished	6,429							6,429
Surrender of Limited Partner OP Units	(26,537)			(8,520)			(8,520)	(18,017)
Net income (loss)	292,284					285,658	285,658	6,626
Other comprehensive income (loss)	(16,209)				(15,824)		(15,824)	(385)
Ending balance (shares) at Jun. 30, 2019		42,871,246	973,385,899
Ending balance at Jun. 30, 2019	7,352,127	$ 429	$ 9,734	12,655,018	(28,026)	(5,416,759)	7,220,396	131,731
Beginning balance (shares) at Dec. 31, 2019		30,871,246	1,076,845,984
Beginning balance at Dec. 31, 2019	6,843,278	$ 309	$ 10,768	13,251,962	(27,670)	(6,399,626)	6,835,743	7,535
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of OP Units to Common Stock (shares)			4,549
Conversion of OP Units to Common Stock	0		$ 1	44			45	(45)
Redemptions of Series F Preferred Stock	(27)			(27)			(27)
Repurchases of Common Stock to settle tax obligation (shares)			(241,092)
Repurchases of Common Stock to settle tax obligation	(2,378)		$ (2)	(2,376)			(2,378)
Equity-based compensation, net (shares)			1,172,038
Equity-based compensation, net	2,855		$ 11	2,844			2,855
Distributions declared on Common Stock — $0.55 per common share	(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 (loss)	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	1,077,781,479
Ending balance at Mar. 31, 2020	6,691,115	$ 309	$ 10,778	13,252,447	(104,217)	(6,475,568)	6,683,749	7,366
Beginning balance (shares) at Dec. 31, 2019		30,871,246	1,076,845,984
Beginning balance at Dec. 31, 2019	6,843,278	$ 309	$ 10,768	13,251,962	(27,670)	(6,399,626)	6,835,743	7,535
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distributions payable relinquished	0
Net income (loss)	141,102
Other comprehensive income (loss)	(78,495)
Ending balance (shares) at Jun. 30, 2020		30,871,246	1,077,848,554
Ending balance at Jun. 30, 2020	6,651,279	$ 309	$ 10,779	13,256,288	(106,109)	(6,517,303)	6,643,964	7,315
Beginning balance (shares) at Mar. 31, 2020		30,871,246	1,077,781,479
Beginning balance at Mar. 31, 2020	6,691,115	$ 309	$ 10,778	13,252,447	(104,217)	(6,475,568)	6,683,749	7,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redemptions of Series F Preferred Stock	(25)			(25)			(25)
Equity-based compensation, net (shares)			67,075
Equity-based compensation, net	4,071		$ 1	4,070			4,071
Distributions declared on Common Stock — $0.55 per common share	(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 (loss)	54,239					54,208	54,208	31
Other comprehensive income (loss)	(1,893)				(1,892)		(1,892)	(1)
Ending balance (shares) at Jun. 30, 2020		30,871,246	1,077,848,554
Ending balance at Jun. 30, 2020	$ 6,651,279	$ 309	$ 10,779	$ 13,256,288	$ (106,109)	$ (6,517,303)	$ 6,643,964	$ 7,315