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Use of Special Purpose Entities (SPE) and Variable Interest Entities (VIE) - Schedule of Classification and Carrying Value of Unconsolidated VIEs (Details) - Equity Method Investment, Nonconsolidated Investee or Group of Investees - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Maximum exposure
Variable Interest Entity [Line Items]
Investments	$ 153,106	$ 185,858
Maximum exposure | Multi-family loans
Variable Interest Entity [Line Items]
Investments	74,999	86,192
Maximum exposure | Investment securities available for sale, at fair value
Variable Interest Entity [Line Items]
Investments	21,283	22,892
Maximum exposure | Equity investments
Variable Interest Entity [Line Items]
Investments	54,324	74,774
Maximum exposure | Assets of disposal group held for sale | Assets of disposal group held for sale
Variable Interest Entity [Line Items]
Investments	500
Maximum exposure | Other assets
Variable Interest Entity [Line Items]
Investments	2,000	2,000
Non-Agency RMBS
Variable Interest Entity [Line Items]
Investments	21,283	22,892
Non-Agency RMBS | Multi-family loans
Variable Interest Entity [Line Items]
Investments	0	0
Non-Agency RMBS | Investment securities available for sale, at fair value
Variable Interest Entity [Line Items]
Investments	21,283	22,892
Non-Agency RMBS | Equity investments
Variable Interest Entity [Line Items]
Investments	0	0
Non-Agency RMBS | Assets of disposal group held for sale | Assets of disposal group held for sale
Variable Interest Entity [Line Items]
Investments	0
Non-Agency RMBS | Other assets
Variable Interest Entity [Line Items]
Investments	0	0
Preferred equity investments in multi-family properties
Variable Interest Entity [Line Items]
Investments	129,323	159,628
Preferred equity investments in multi-family properties | Multi-family loans
Variable Interest Entity [Line Items]
Investments	74,999	86,192
Preferred equity investments in multi-family properties | Investment securities available for sale, at fair value
Variable Interest Entity [Line Items]
Investments	0	0
Preferred equity investments in multi-family properties | Equity investments
Variable Interest Entity [Line Items]
Investments	54,324	73,436
Preferred equity investments in multi-family properties | Assets of disposal group held for sale | Assets of disposal group held for sale
Variable Interest Entity [Line Items]
Investments	0
Preferred equity investments in multi-family properties | Other assets
Variable Interest Entity [Line Items]
Investments	0	0
Joint venture equity investments in multi-family properties
Variable Interest Entity [Line Items]
Investments	500	1,338
Joint venture equity investments in multi-family properties | Multi-family loans
Variable Interest Entity [Line Items]
Investments	0	0
Joint venture equity investments in multi-family properties | Investment securities available for sale, at fair value
Variable Interest Entity [Line Items]
Investments	0	0
Joint venture equity investments in multi-family properties | Equity investments
Variable Interest Entity [Line Items]
Investments	0	1,338
Joint venture equity investments in multi-family properties | Assets of disposal group held for sale | Assets of disposal group held for sale
Variable Interest Entity [Line Items]
Investments	500
Joint venture equity investments in multi-family properties | Other assets
Variable Interest Entity [Line Items]
Investments	0	0
Other investments
Variable Interest Entity [Line Items]
Investments	2,000	2,000
Other investments | Multi-family loans
Variable Interest Entity [Line Items]
Investments	0	0
Other investments | Investment securities available for sale, at fair value
Variable Interest Entity [Line Items]
Investments	0	0
Other investments | Equity investments
Variable Interest Entity [Line Items]
Investments	0	0
Other investments | Assets of disposal group held for sale | Assets of disposal group held for sale
Variable Interest Entity [Line Items]
Investments	0
Other investments | Other assets
Variable Interest Entity [Line Items]
Investments	$ 2,000	$ 2,000

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

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