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Real Estate Owned - Brooklyn Multifamily Development - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2025		Jun. 30, 2024	Jun. 30, 2025		Jun. 30, 2024	Feb. 28, 2025	Dec. 31, 2024		Dec. 31, 2022
Real Estate [Line Items]
Debt related to real estate owned, held for investment, net	$ 376,504			$ 376,504				$ 324,587
Mortgage loans on real estate, commercial and consumer, net	8,624,910			8,624,910				7,104,156
Financing receivable, construction and finance costs capitalized	30,900		$ 39,900	$ 53,000		$ 77,400
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]			Secured Overnight Financing Rate [Member]	Secured Overnight Financing Rate [Member]
Debt instrument, covenant, unencumbered liquidity, threshold	100,000			$ 100,000
Debt instrument, covenant, net worth threshold	600,000			600,000
Aggregate Notional Amount (in thousands)			$ 73,700			$ 73,700
Interest rate caps | Not Designated as Hedging Instrument
Real Estate [Line Items]
Aggregate Notional Amount (in thousands)	238,535			238,535				238,535
Derivative Financial Instruments, Assets | Interest rate caps | Not Designated as Hedging Instrument
Real Estate [Line Items]
Aggregate Notional Amount (in thousands)	200			200				400
Letter of Credit
Real Estate [Line Items]
Maximum amount of borrowings	388,400			$ 388,400
Line of credit facility, option to extend, period				1 year
Mortgages
Real Estate [Line Items]
Debt related to real estate owned, held for investment, net	303,500			$ 303,500				252,000
Less: deferred financing costs	1,400			1,400				2,000
JV Partner
Real Estate [Line Items]
Financing receivable, loan in process										$ 164,800
JV Partner | Joint venture
Real Estate [Line Items]
Equity method investment, ownership percentage										100.00%
Subordinate Mortgage Portfolio Segment
Real Estate [Line Items]
Mortgage loans on real estate, commercial and consumer, net	145,472	[1]		$ 145,472	[1]		$ 24,000	388,809	[1]
Multifamily Development - Brooklyn, NY
Real Estate [Line Items]
Interest rate for repurchase facility				2.55%
Deed-In-Lieu Of Foreclosure
Real Estate [Line Items]
Mortgage loans on real estate, commercial and consumer, net	593,900			$ 593,900				540,900
Capitalized construction and financing costs	$ 372,700			$ 372,700				$ 319,700
[1] Net of $381,348 and $373,336 CECL Allowances comprised $38,848 and $30,836 General CECL Allowance in 2025 and 2024, respectively, and $342,500 Specific CECL Allowance in 2025 and 2024.

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