Segment Information - Reportable Segment Profit or Loss (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment information
Number of reportable segments | segment	3
Revenues	$ 1,003,046	$ 886,272	$ 913,710
Expenses
SUMMIT Operator expenses	116,364	111,739	101,211
Operating Expenses	226,099	189,598	196,696
Real estate taxes	155,023	128,187	143,757
Operating lease rent	24,423	24,423	27,292
Real Estate segment net operating income	651,931	730,630	598,694
Equity in net loss from unconsolidated joint ventures	(56,143)	(179,695)	(76,509)
Loss from debt fund investments, net	(1,446)	0	0
Loan loss and other investment reserves, net of recoveries	71,326	0	(6,890)
Depreciation and amortization	(255,713)	(207,443)	(247,810)
Interest expense, net of interest income	(187,656)	(147,220)	(137,114)
Interest expense on senior obligations of consolidated securitization vehicles	(60,693)	(14,634)	0
Non-operating net loss from unconsolidated joint ventures	(317,261)	(291,131)	(282,203)
Marketing, general and administrative	(89,310)	(85,187)	(111,389)
Transaction related costs	(13,942)	(401)	(1,099)
Gain (loss) on early extinguishment of debt	0	43,762	(870)
Depreciable real estate reserves	(32,092)	(104,071)	(382,374)
Depreciable real estate reserves in unconsolidated joint venture	(14,592)	(263,190)
Loss on sale of real estate, net	(2,143)	3,025	(32,370)
Purchase price and other fair value adjustments	(36,233)	88,966	(17,260)
Equity in net gain (loss) on sale of interest in unconsolidated joint venture/real estate	86,068	208,144	(13,368)
Gain on sale of marketable securities	10,232	0	0
Depreciation and amortization	(252,025)	(205,007)	(246,063)
Amortization of deferred financing costs	(7,054)	(6,619)	(7,837)
Interest expense, net of interest income	(166,149)	(119,078)	(102,965)
Net (loss) income	(96,921)	30,222	(599,337)
Operating Segments
Expenses
Net (loss) income	85,649	30,379	(233)
Operating Segments | Real Estate Segment
Segment information
Revenues	788,591	709,725	760,745
Expenses
SUMMIT Operator expenses	0	0	0
SUMMIT Operator tax expense	0	0	0
Operating Expenses	226,099	189,598	196,696
Real estate taxes	155,023	128,187	143,757
Operating lease rent	24,423	24,423	27,292
Net operating income from unconsolidated joint ventures	268,885	363,113	205,694
Real Estate segment net operating income	651,931	730,630	598,694
Operating Segments | SUMMIT Segment
Segment information
Revenues	122,344	133,214	118,260
Expenses
SUMMIT Operator expenses	116,364	111,739	101,211
SUMMIT Operator tax expense	3,259	730	9,201
Operating Expenses	0	0	0
Real estate taxes	0	0	0
Operating lease rent	0	0	0
Equity in net loss from unconsolidated joint ventures	0	0
Loss from debt fund investments, net
Loan loss and other investment reserves, net of recoveries			0
Depreciation and amortization	(3,688)	(2,436)	(1,747)
Interest expense, net of interest income	0	0	0
Interest expense on senior obligations of consolidated securitization vehicles	0	0
Net (loss) income	(967)	18,309	6,101
Operating Segments | DPE Segment
Segment information
Revenues	92,111	43,333	34,705
Expenses
SUMMIT Operator expenses	0	0	0
SUMMIT Operator tax expense	0	0	0
Operating Expenses	0	0	0
Real estate taxes	0	0	0
Operating lease rent	0	0	0
Equity in net loss from unconsolidated joint ventures	6,825	11,513
Loss from debt fund investments, net	(1,446)
Loan loss and other investment reserves, net of recoveries	71,326		(6,890)
Depreciation and amortization	0	0	0
Interest expense, net of interest income	(21,507)	(28,142)	(34,149)
Interest expense on senior obligations of consolidated securitization vehicles	(60,693)	(14,634)
Net (loss) income	$ 86,616	$ 12,070	$ (6,334)