Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Income (Loss) from Equity Method Investments, Net of Dividends or Distributions	$ (665)	$ (314)	$ 0
Gains (Losses) on Sales of Investment Real Estate	21,109	23,456	0
Operating Income (Loss)	122,958	(56,888)	101,805
Interest Expense	102,414	118,558	111,964
Fair Value, Assets Measured on Recurring Basis, Change in Unrealized Gain (Loss)	0	0	1,831
Gain (Loss) on Extinguishment of Debt	0	(6,674)	(84)
Gain (Loss) on Sales of Loans, Net	(12)	517	954
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	20,532	(181,603)	(7,458)
net loss attributable to non-controlling interests	(86)	3,815	214
Net Income (Loss) Attributable to Parent	20,446	(177,788)	(7,244)
Dividends to preferred stockholders	(153,418)	(160,908)	(113,772)
NetIncomeAllocatedToUnvestedRestrictedShares	(514)	(205)	(17)
Net Income (Loss) Available to Common Stockholders, Basic	$ (133,486)	$ (338,901)	$ (121,033)
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	0	0	0
Weighted Average Number of Shares Outstanding, Diluted	51,499,000	48,743,000	44,265,000
Earnings Per Share, Basic	$ (2.59)	$ (6.95)	$ (2.73)
Common Unit, Outstanding	468,000	649,000	856,000
preferred stock stated value per share	$ 1,000
Common Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	19,510,000
ClassBUnits [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	58,000
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	664,000
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	65,000
Performance Shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	449
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	664,000	548,000	13,000
Series A Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.00%
preferred stock stated value per share	$ 1,000
Preferred Stock, Shares Outstanding	1,321,000	1,735,000	2,028,000
Series A1 Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding	246,000	149,000	5,000
Series M Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding	84,000	89,000	103,000
Series M Preferred Stock [Member] | Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage	5.75%
Series M Preferred Stock [Member] | Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage	7.50%
Series M1 Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Shares Outstanding	41,000	19,000	0
Series M1 Preferred Stock [Member] | Minimum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage	6.10%
Series M1 Preferred Stock [Member] | Maximum [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Preferred Stock, Dividend Rate, Percentage	7.10%