Income (Loss) per Share (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 02, 2018	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Feb. 14, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
minority interest partnership units outstanding		742,413		742,413
Restricted Stock Units outstanding				54,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 26,746,000	$ 26,086,000	$ (102,321,000)	$ 75,093,000
Gains (Losses) on Sales of Investment Real Estate		0	0	0	4,000
Net Income (Loss) Attributable to Parent		(3,494,000)	(2,078,000)	(195,560,000)	(5,956,000)
Deemed noncash dividend				(499,000)	(358,000)
Net Income (Loss) Available to Common Stockholders, Basic		$ (39,499,000)	(31,529,000)	$ (300,270,000)	(88,497,000)
Incremental Common Shares from conversion of outstanding units		27,767,000		27,767,000
Share-based Compensation		$ (152,000)	$ 0	$ 5,463,000	$ 0
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities		0	0	0	0
Series A Redeemable Preferred Stock, par value per share							$ 0.01
ClassBUnits [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	256,087
Share-based Compensation						$ 65,000
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		548,000		548,000		20,000
Share-based Compensation				$ 548,000
Performance based restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Restricted Stock Units outstanding				273,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	272,929
mShares [Domain]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding		91,000	90,000	91,000	90,000
mShares [Domain] | Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage				5.75%
mShares [Domain] | Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage				7.50%
Series A Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding		1,991,000	1,932,000	1,991,000	1,932,000	2,028,000
Preferred Stock, Dividend Rate, Percentage				6.00%
Series A Redeemable Preferred Stock, par value per share		$ 0.01		$ 0.01		$ 0.01
preferred stock stated value per share		$ 1,000		$ 1,000
Series M Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding		91,000		91,000		103,000
Series A Redeemable Preferred Stock, par value per share		$ 0.01		$ 0.01		$ 0.01
Common Class A [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common Unit, Outstanding		742,000	856,000	742,000	856,000
Series A1 Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding		103,000		103,000		5,000
Series A Redeemable Preferred Stock, par value per share		$ 0.01		$ 0.01		$ 0.01
Series M1 Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding		13,000		13,000		0
Series A Redeemable Preferred Stock, par value per share		$ 0.01		$ 0.01		$ 0.01
Series M1 Preferred Stock | Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage				6.10%
Series M1 Preferred Stock | Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage				7.10%