Statements of Equity and Accumulated Deficit - USD ($)	Total	Series A Preferred Stock [Member]	Series A1/M1 Preferred Stock	Common Stock [Member]	Common Stock [Member] Series A Preferred Stock [Member]	Common Stock [Member] Series M Preferred Stock [Member]	Common Stock [Member] Series A1/M1 Preferred Stock	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Series A Preferred Stock [Member]	Additional Paid-in Capital [Member] Series A1/M1 Preferred Stock	Accumulated Deficit [Member]	Accumulated Deficit [Member] Series A Preferred Stock [Member]	Accumulated Deficit [Member] Series A1/M1 Preferred Stock	Total Stockholders' Equity [Member]	Total Stockholders' Equity [Member] Series A Preferred Stock [Member]	Total Stockholders' Equity [Member] Series A1/M1 Preferred Stock	Noncontrolling Interest [Member]	Noncontrolling Interest [Member] Series A Preferred Stock [Member]	Noncontrolling Interest [Member] Series A1/M1 Preferred Stock	Preferred Stock [Member]	Preferred Stock [Member] Series A Preferred Stock [Member]	Preferred Stock [Member] Series M Preferred Stock [Member]	Preferred Stock [Member] Series A1/M1 Preferred Stock	ClassBUnits [Member]	ClassBUnits [Member] Common Stock [Member]	ClassBUnits [Member] Additional Paid-in Capital [Member]	ClassBUnits [Member] Accumulated Deficit [Member]	ClassBUnits [Member] Total Stockholders' Equity [Member]	ClassBUnits [Member] Noncontrolling Interest [Member]	ClassBUnits [Member] Preferred Stock [Member] Series A Preferred Stock [Member]
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 46,765,000	$ 369,420,000			$ 0	$ 0		$ 46,765,000	$ 369,416,000		$ 0	$ 0		$ 46,765,000	$ 369,420,000						$ 4,000	$ 0
Proceeds from Issuance of Common Stock	0
Balance at Dec. 31, 2018	1,609,385,000			$ 418,000				1,607,712,000			0			1,608,146,000			$ 1,239,000				16,000
Stock Redeemed or Called During Period, Value	(7,988,000)			26,000				(8,014,000)			0			(7,988,000)			0				0
exercise of warrants	10,074,000			8,000				10,066,000			0			10,074,000			0				0
Stock Issued During Period, Value, Conversion of Units	0			1,000				676,000			0			677,000			(677,000)				0
amortization of Class A Unit awards																								$ 451,000	$ 0	$ 0	$ 0	$ 0	$ 451,000	$ 0
Syndication and offering costs	(43,795,000)			0				(43,795,000)			0			(43,795,000)			0				0
Stock Issued During Period, Value, Share-based Compensation, Gross	471,000			0				471,000			0			471,000			0				0
Dividends, Common Stock, Cash	(34,599,000)			0				(34,599,000)			0			(34,599,000)			0			$ 0
Balance at Sep. 30, 2019	1,862,930,000			453,000				1,861,446,000			0			1,861,919,000			1,011,000				20,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(6,094,000)			0				0			(5,956,000)			(5,956,000)			(138,000)				0
Other Ownership Interests, Contributed Capital			$ 2,050,000				$ 0									$ 0			$ 2,050,000				$ 0
non-controlling interest equity adjustment	0			0				1,231,000			0			1,231,000			(1,231,000)				0
Payments to Noncontrolling Interests	(683,000)			0				0			0			0			(683,000)				0
Dividends, Preferred Stock	(3,176,000)	(79,351,000)			0			(3,405,000)	(85,078,000)		229,000	5,727,000		(3,176,000)	(79,351,000)		0	$ 0			0	0
Proceeds from Issuance of Preferred Stock and Preference Stock	17,156,000	116,828,000			0	$ 0		17,156,000	116,827,000		0	0		17,156,000	116,828,000						1,000	0
Balance at Jun. 30, 2019	1,784,170,000			442,000				1,784,197,000			0			1,784,658,000			(488,000)				19,000
Stock Redeemed or Called During Period, Value	(2,877,000)			9,000				(2,886,000)			0			(2,877,000)			0				0
exercise of warrants	2,482,000			2,000				2,480,000			0			2,482,000			0				0
Stock Issued During Period, Value, Conversion of Units	0			0				112,000			0			112,000			(112,000)				0
amortization of Class A Unit awards																								150,000	0	0	0	0	150,000	0
Syndication and offering costs	(13,553,000)			0				(13,553,000)			0			(13,553,000)			0				0
Stock Issued During Period, Value, Share-based Compensation, Gross	155,000			0				155,000			0			155,000			0				0
Dividends, Common Stock, Cash	(11,823,000)			0				(11,823,000)			0			(11,823,000)			0			0
Balance at Sep. 30, 2019	1,862,930,000			453,000				1,861,446,000			0			1,861,919,000			1,011,000				20,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(2,137,000)			0				0			(2,078,000)			(2,078,000)			(59,000)				0
Other Ownership Interests, Contributed Capital			2,050,000				0									0			2,050,000				0
non-controlling interest equity adjustment	0			0				305,000			0			305,000			(305,000)				0
Payments to Noncontrolling Interests	(225,000)			0				0			0			0			(225,000)				0
Dividends, Preferred Stock	(1,335,000)	(28,111,000)			0			(1,430,000)	(30,094,000)		95,000	1,983,000		(1,335,000)	(28,111,000)		0	0			0	0
Proceeds from Issuance of Preferred Stock and Preference Stock		64,484,000	110,947,000		0		0		64,483,000	$ 110,946,000					64,484,000	110,947,000					1,000		1,000
Proceeds from Issuance of Common Stock	4,522,000
Balance at Dec. 31, 2019	1,934,116,000			464,000				1,938,057,000			(7,244,000)			1,931,298,000			2,818,000				21,000
Balance (Accounting Standards Update 2016-13) at Dec. 31, 2019	(7,414,000)										(7,414,000)			(7,414,000)
Stock Redeemed or Called During Period, Value	(82,032,000)			28,000				(82,058,000)			0			(82,032,000)			0				(2,000)
exercise of warrants	8,000			0				8,000			0			8,000			0				0
Stock Issued During Period, Value, Conversion of Units	0			1,000				1,381,000			0			1,382,000			(1,382,000)				0
amortization of Class A Unit awards																								194,000	0	0	0	0	194,000	0
Syndication and offering costs	(20,775,000)			0				(20,775,000)			0			(20,775,000)			0				0
Stock Issued During Period, Value, Share-based Compensation, Gross	864,000			0				864,000			0			864,000			0				0
Dividends, Common Stock, Cash	(29,991,000)			0				(29,991,000)			0			(29,991,000)			0			0
Balance at Sep. 30, 2020	1,670,858,000			499,000				1,882,149,000			(210,218,000)			1,672,451,000			(1,593,000)				21,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(199,075,000)			0				0			(195,560,000)			(195,560,000)			(3,515,000)				0
Other Ownership Interests, Contributed Capital			103,000				0									0			103,000				0
non-controlling interest equity adjustment	0			0				(773,000)			0			(773,000)			773,000				0
Payments to Noncontrolling Interests	(119,000)			0				0			0			0			(119,000)				0
us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	465,000			0				0			0			0			465,000				0
Dividends, Preferred Stock	(4,903,000)	(97,272,000)	(2,426,000)		0		0	(4,903,000)	(97,272,000)	(2,426,000)	0	0	$ 0	(4,903,000)	(97,272,000)	(2,426,000)	0	0	0		0	0	0
Proceeds from Issuance of Preferred Stock and Preference Stock			42,352,000				0			42,352,000						42,352,000							0
Proceeds from Issuance of Common Stock			4,614,000				6,000			4,608,000						4,614,000							0
Balance at Jun. 30, 2020	1,709,996,000			493,000				1,917,212,000			(206,724,000)			1,711,002,000			(1,006,000)				21,000
Stock Redeemed or Called During Period, Value	(33,823,000)			0				(33,823,000)			0			(33,823,000)			0
Stock Issued During Period, Value, Conversion of Units	0			0				(2,000)			0			(2,000)			2,000				0
amortization of Class A Unit awards																								$ 70,000	$ 0	$ 0	$ 0	$ 0	$ 70,000	$ 0
Syndication and offering costs	4,127,000							4,127,000						4,127,000
Stock Issued During Period, Value, Share-based Compensation, Gross	512,000			0				512,000			0			512,000			0				0
Dividends, Common Stock, Cash	(8,876,000)			0				(8,876,000)			0			(8,876,000)			0			$ 0
Balance at Sep. 30, 2020	1,670,858,000			499,000				1,882,149,000			(210,218,000)			1,672,451,000			(1,593,000)				21,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(3,602,000)			0				0			(3,494,000)			(3,494,000)			(108,000)				0
Other Ownership Interests, Contributed Capital			(98,000)				0									0			(98,000)				0
non-controlling interest equity adjustment	0			0				202,000			0			202,000			(202,000)				0
Payments to Noncontrolling Interests	(119,000)			0				0			0			0			(119,000)				0
us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	132,000			$ 0				0			0			0			132,000				0
Dividends, Preferred Stock	$ (1,547,000)	$ (32,964,000)	$ (1,398,000)		$ 0		$ 0	$ (1,547,000)	$ (32,964,000)	$ (1,398,000)	$ 0	$ 0	$ 0	$ (1,547,000)	$ (32,964,000)	$ (1,398,000)	$ 0	$ 0	$ 0		$ 0	$ 0	$ 0