Debt and Preferred Equity Investments - Debt Investment (Details) - USD ($)	3 Months Ended		6 Months Ended		23 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Aggregate weighted average current yield (as a percent)			6.51%
Debt Investments Held [Abstract]
Carrying Value, Fixed Rate	$ 1,134,080,000		$ 1,134,080,000		$ 1,134,080,000	$ 1,088,723,000
Carrying Value	1,134,080,000		1,134,080,000		1,134,080,000	1,088,723,000
Investment income	20,407,000	$ 20,107,000	40,295,000	$ 39,380,000
Mezzanine Loan Due August 2022
Debt Investments Held [Abstract]
Amount participated out	400,000		400,000		400,000
Mezzanine Loan Due June 2024
Debt Investments Held [Abstract]
Amount participated out	12,000,000		12,000,000		12,000,000
Loan interest income			0
Debt Investments in Mortgage Loans
Debt Investments Held [Abstract]
Future Funding Obligations	47,487,000		47,487,000		47,487,000
Senior Financing	4,749,199,000		4,749,199,000		4,749,199,000
Allowance for loan loss	(6,630,000)		(6,630,000)		(6,630,000)	(6,630,000)
Carrying Value	845,217,000		845,217,000		845,217,000	815,717,000
Total fixed rate
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	2,945,331,000		2,945,331,000		2,945,331,000
Carrying Value, Fixed Rate	533,565,000		533,565,000		533,565,000	527,377,000
Total fixed rate | Mezzanine Loan Due August 2022
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	280,000,000		280,000,000		280,000,000
Carrying Value, Fixed Rate	44,814,000		44,814,000		44,814,000	43,521,000
Total fixed rate | Mortgage Loan Due April 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	0		0		0
Carrying Value, Fixed Rate	73,000,000		73,000,000		73,000,000	73,000,000
Total fixed rate | Mezzanine Loan Due June 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	388,573,000		388,573,000		388,573,000
Carrying Value, Fixed Rate	225,367,000		225,367,000		225,367,000	225,367,000
Investment income					0
Total fixed rate | Mezzanine Loan Due June 2023, 2
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	279,008,000		279,008,000		279,008,000
Carrying Value, Fixed Rate	71,768,000		71,768,000		71,768,000	66,873,000
Total fixed rate | Mezzanine Loan Due June 2024
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	105,000,000		105,000,000		105,000,000
Carrying Value, Fixed Rate	13,366,000		13,366,000		13,366,000	13,366,000
Total fixed rate | Mezzanine Loan, with an Initial Maturity Date of January 2025
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	95,000,000		95,000,000		95,000,000
Carrying Value, Fixed Rate	30,000,000		30,000,000		30,000,000	30,000,000
Total fixed rate | Mezzanine Loan with an Initial Maturity Date of June 2027
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	1,712,750,000		1,712,750,000		1,712,750,000
Carrying Value, Fixed Rate	55,250,000		55,250,000		55,250,000	55,250,000
Total fixed rate | Mezzanine Loan With Initial Maturity Date of December 2029
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	85,000,000		85,000,000		85,000,000
Carrying Value, Fixed Rate	20,000,000		20,000,000		20,000,000	20,000,000
Total floating rate
Debt Investments Held [Abstract]
Future Funding Obligations	47,487,000		47,487,000		47,487,000
Senior Financing	1,803,868,000		1,803,868,000		1,803,868,000
Carrying Value	318,282,000		318,282,000		318,282,000	294,970,000
Total floating rate | Mezzanine Loan Due August 2022
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	1,115,000,000		1,115,000,000		1,115,000,000
Carrying Value	138,386,000		138,386,000		138,386,000	133,735,000
Total floating rate | Mortgage Loan Due April 2023
Debt Investments Held [Abstract]
Future Funding Obligations	0		0		0
Senior Financing	275,000,000		275,000,000		275,000,000
Carrying Value	49,999,000		49,999,000		49,999,000	49,998,000
Total floating rate | Mezzanine Loan Due July 2022
Debt Investments Held [Abstract]
Future Funding Obligations	3,956,000		3,956,000		3,956,000
Senior Financing	186,084,000		186,084,000		186,084,000
Carrying Value	38,496,000		38,496,000		38,496,000	37,511,000
Total floating rate | Mortgage/Mezzanine Loan Due December 2022
Debt Investments Held [Abstract]
Future Funding Obligations	12,542,000		12,542,000		12,542,000
Senior Financing	0		0		0
Carrying Value	45,830,000		45,830,000		45,830,000	34,874,000
Total floating rate | Mezzanine Loan Due May 2023
Debt Investments Held [Abstract]
Future Funding Obligations	3,761,000		3,761,000		3,761,000
Senior Financing	54,000,000		54,000,000		54,000,000
Carrying Value	8,243,000		8,243,000		8,243,000	8,050,000
Total floating rate | Mezzanine Loan Due May 2023, 2
Debt Investments Held [Abstract]
Future Funding Obligations	27,228,000		27,228,000		27,228,000
Senior Financing	173,784,000		173,784,000		173,784,000
Carrying Value	$ 37,328,000		$ 37,328,000		$ 37,328,000	$ 30,802,000