Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total	Adoption of ASU 2016-13, see Note 2 [Member]	Class A Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member] Adoption of ASU 2016-13, see Note 2 [Member]	Stockholders' Equity [Member]	Stockholders' Equity [Member] Adoption of ASU 2016-13, see Note 2 [Member]	Non-Controlling Interests [Member]	Non-Controlling Interests [Member] Adoption of ASU 2016-13, see Note 2 [Member]
Balance at Dec. 31, 2018	$ 3,374,607		$ 1,234	$ 3,966,540	$ (34,222)	$ (569,428)		$ 3,364,124		$ 10,483
Shares of class A common stock issued, net	65,381		23	65,358				65,381
Restricted class A common stock earned	7,639			7,639				7,639
Dividends reinvested	11			143		(132)		11
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	3,466				3,466			3,466
Net (loss) income	76,867					76,565		76,565		302
Dividends declared on common stock, $0.62 per share	(77,913)					(77,913)		(77,913)
Contributions from non-controlling interests	1,470									1,470
Distributions to non-controlling interests	(64)									(64)
Balance at Mar. 31, 2019	3,451,589		1,257	4,039,805	(30,756)	(570,908)		3,439,398		12,191
Balance at Dec. 31, 2018	3,374,607		1,234	3,966,540	(34,222)	(569,428)		3,364,124		10,483
Other comprehensive income (loss)	4,802
Net (loss) income	152,418
Balance at Jun. 30, 2019	3,776,425		1,343	4,354,571	(29,420)	(579,131)		3,747,363		29,062
Balance at Mar. 31, 2019	3,451,589		1,257	4,039,805	(30,756)	(570,908)		3,439,398		12,191
Shares of class A common stock issued, net	306,952		86	306,866				306,952
Restricted class A common stock earned	7,629			7,629				7,629
Dividends reinvested	8			146		(138)		8
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	1,336				1,336			1,336
Net (loss) income	75,551					75,174		75,174		377
Dividends declared on common stock, $0.62 per share	(83,259)					(83,259)		(83,259)
Contributions from non-controlling interests	17,158									17,158
Distributions to non-controlling interests	(664)									(664)
Balance at Jun. 30, 2019	3,776,425		1,343	4,354,571	(29,420)	(579,131)		3,747,363		29,062
Balance at Dec. 31, 2019	3,784,681		1,350	4,370,014	(16,233)	(592,548)		3,762,583		22,098
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019		$ (17,650)					$ (17,565)		$ (17,565)		$ (85)
Shares of class A common stock issued, net	4		4					4
Restricted class A common stock earned	8,550			8,550				8,550
Dividends reinvested	12			162		(150)		12
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	34,481				34,481			34,481
Net (loss) income	(53,283)					(53,350)		(53,350)		67
Dividends declared on common stock, $0.62 per share	(83,920)					(83,920)		(83,920)
Contributions from non-controlling interests	8,108									8,108
Distributions to non-controlling interests	(6,681)									(6,681)
Balance at Mar. 31, 2020	3,674,427		1,354	4,378,851	18,248	(747,533)		3,650,920		23,507
Balance at Dec. 31, 2019	3,784,681		1,350	4,370,014	(16,233)	(592,548)		3,762,583		22,098
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2019		$ (17,650)					$ (17,565)		$ (17,565)		$ (85)
Other comprehensive income (loss)	25,159
Net (loss) income	(34,780)
Balance at Jun. 30, 2020	3,895,784		1,462	4,685,159	8,925	(820,783)		3,874,763		21,021
Balance at Mar. 31, 2020	3,674,427		1,354	4,378,851	18,248	(747,533)		3,650,920		23,507
Shares of class A common stock issued, net	297,599		108	297,491				297,599
Restricted class A common stock earned	8,527			8,527				8,527
Dividends reinvested	13			165		(152)		13
Deferred directors' compensation	125			125				125
Other comprehensive income (loss)	(9,323)				(9,323)			(9,323)
Net (loss) income	18,505					17,544		17,544		961
Dividends declared on common stock, $0.62 per share	(90,642)					(90,642)		(90,642)
Distributions to non-controlling interests	(3,447)									(3,447)
Balance at Jun. 30, 2020	$ 3,895,784		$ 1,462	$ 4,685,159	$ 8,925	$ (820,783)		$ 3,874,763		$ 21,021