Loans Receivable and Allowance for Credit Losses - Schedule of Carrying Value of Loans Transferred, Loans Sold and Purchased for the Held-for-Investment Portfolio (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	$ 117,081	$ 36,194
Sales	108,602	38,010
Purchases	250,403	224,307
Write-offs of allowance for loan losses related to loans transferred to held-for-sale	2,000	2,000
Originated
Loans Receivable and Allowance for Credit Losses
Sales	69,000	34,000
Loans Sold in Secondary Market \| Purchased
Loans Receivable and Allowance for Credit Losses
Sales	39,000	4,000
Commercial Lending \| C&I
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	101,777	6,356
Sales	98,280	6,356
Purchases	109,892	136,943
Commercial Lending \| CRE
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale		20,338
Sales		20,338
Purchases		0
Commercial Lending \| Multifamily residential
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	9,959
Sales	9,959
Purchases	0
Commercial Lending \| Construction and land
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale		9,500
Sales		11,316
Purchases		0
Consumer Lending \| SFR
Loans Receivable and Allowance for Credit Losses
Loans transferred from held-for-investment to held-for-sale	5,345	0
Sales	363	0
Purchases	$ 140,511	$ 87,364

Financing Receivable, Excluding Accrued Interest, Allowance For Credit Loss, Writeoff, Reclassification To Held-For-Sale

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- References

No definition available.

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- Definition

Amount excluding accrued interest, of increase in financing receivable from purchase. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-11

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- Definition

Amount excluding accrued interest, of financing receivable reclassified to held-for-sale. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-11

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- Definition

Amount excluding accrued interest, of decrease in financing receivable from sale. Excludes net investment in lease.

+ References

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