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Mortgage Banking Activities, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Other income, net	$ 5,995	$ 2,346	$ 16,794	$ 11,060
Mortgage banking activities, net	39,569	19,440	73,049	52,663
Residential Consumer Mortgage Banking Activities, Net:
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Other income, net	335	107	1,764	1,422
Mortgage banking activities, net	26,715	8,964	40,787	19,390
Residential Consumer Mortgage Banking Activities, Net: | Residential consumer loans, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Changes in fair value of assets	20,959	(2,819)	31,410	5,272
Residential Consumer Mortgage Banking Activities, Net: | Trading securities
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Changes in fair value of assets	(28,630)	(482)	(17,508)	2,188
Residential Consumer Mortgage Banking Activities, Net: | Risk management derivatives
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Risk management derivatives	34,051	12,158	25,121	10,508
Residential Investor Mortgage Banking Activities, Net:
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Other income, net	5,548	4,004	14,989	13,956
Mortgage banking activities, net	12,854	10,476	32,262	33,273
Residential Investor Mortgage Banking Activities, Net: | Residential investor term loans, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Changes in fair value of assets	6,061	1,600	11,833	13,214
Residential Investor Mortgage Banking Activities, Net: | Residential investor bridge loans, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Changes in fair value of assets	694	1,438	2,748	4,808
Residential Investor Mortgage Banking Activities, Net: | Risk management derivatives
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Risk management derivatives	$ 551	$ 3,434	$ 2,692	$ 1,295

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The net income attributable to mortgage banking activities. This includes market valuations related to residential and commercial loans, Sequoia IOs, and mortgage banking derivatives, as well as realized gains or losses associated with mortgage loan sales.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
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-Section S99
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-Publisher FASB
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Amount of unrealized gain (loss) related to the fair value of price risk derivatives designated as fair value hedging instruments, as offset by the gain (loss) on the hedged item to the extent that the fair value hedge is determined to be effective.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
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-Topic 946
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