Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net interest income
Interest income	$ 293,520,000	$ 176,099,000	$ 239,849,000
Interest expense	195,602,000	182,949,000	227,474,000
Net interest income (expense)	97,918,000	(6,850,000)	12,375,000
Provision for (release of) loan loss reserves, net	3,711,000	(8,713,000)	18,275,000
Net interest income (expense) after provision for (release of) loan losses	94,207,000	1,863,000	(5,900,000)
Other income (loss)
Real estate operating income	108,269,000	101,564,000	100,248,000
Sale of loans, net	(2,511,000)	8,398,000	(1,571,000)
Realized gain (loss) on securities	(73,000)	1,594,000	(12,410,000)
Unrealized gain (loss) on equity securities	(41,000)	0	(132,000)
Unrealized gain (loss) on Agency interest-only securities	(45,000)	(91,000)	263,000
Realized gain (loss) on sale of real estate, net	115,998,000	55,766,000	32,102,000
Fee and other income	15,020,000	11,190,000	12,654,000
Net result from derivative transactions	12,360,000	1,749,000	(15,270,000)
Earnings (loss) from investment in unconsolidated ventures	1,410,000	1,579,000	1,821,000
Gain (loss) on extinguishment of debt	685,000	0	22,250,000
Total other income (loss)	251,072,000	181,749,000	139,955,000
Costs and expenses
Compensation and employee benefits	75,836,000	38,347,000	58,101,000
Operating expenses	20,716,000	17,672,000	20,294,000
Real estate operating expenses	38,605,000	26,161,000	28,584,000
Fee expense	7,235,000	5,810,000	7,244,000
Depreciation and amortization	32,673,000	37,801,000	39,079,000
Total costs and expenses	175,065,000	125,791,000	153,302,000
Income (loss) before taxes	170,214,000	57,821,000	(19,247,000)
Income tax expense (benefit)	4,909,000	928,000	(9,789,000)
Net income (loss)	165,305,000	56,893,000	(9,458,000)
Net (income) loss attributable to noncontrolling interests in consolidated ventures	(23,088,000)	(371,000)	(5,544,000)
Net (income) loss attributable to noncontrolling interests in Operating Partnership	$ 0	$ 0	$ 557,000
Earnings per share:
Basic (in dollars per share)	$ 1.14	$ 0.46	$ (0.13)
Diluted (in dollars per share)	$ 1.13	$ 0.45	$ (0.13)
Weighted average shares outstanding:
Basic (in shares)	124,301,421	123,763,843	112,409,615
Diluted (in shares)	125,823,671	124,563,051	112,409,615
Class A Common Stock
Costs and expenses
Net income (loss) attributable to Class A common shareholders	$ 142,217,000	$ 56,522,000	$ (14,445,000)
Earnings per share:
Basic (in dollars per share)	$ 1.14	$ 0.46	$ (0.13)
Diluted (in dollars per share)	$ 1.13	$ 0.45	$ (0.13)
Weighted average shares outstanding:
Basic (in shares)	124,301,421		112,409,615
Diluted (in shares)	125,823,671	124,563,051	112,409,615