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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Loans Receivable and Allowance for Credit Losses - Schedule Of Composition Of Loans Held-For-Investment (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	$ 54,961,184		$ 53,726,637
Allowance for loan losses	(760,416)	$ (734,856)	(702,052)	$ (683,794)	$ (670,280)	$ (668,743)
Loans held-for-investment, net	54,200,768		53,024,585
Net deferred loan fees and net unamortized premiums	74,000		46,000
Commercial lending
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	38,490,284		37,672,102
Commercial lending \| C&I
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	17,822,881		17,397,158
Allowance for loan losses	(442,291)	(421,288)	(384,319)	(379,984)	(373,631)	(392,685)
Commercial lending \| CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	14,978,775		14,655,340
Allowance for loan losses	(212,618)	(212,899)	(218,677)	(194,794)	(187,460)	(170,592)
Commercial lending \| Multifamily residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	4,978,915		4,953,442
Allowance for loan losses	(29,073)	(32,324)	(32,117)	(40,254)	(37,418)	(34,375)
Commercial lending \| Construction and land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	709,713		666,162
Allowance for loan losses	(17,856)	(15,199)	(17,497)	(14,322)	(10,819)	(10,469)
Commercial lending \| Total CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	20,667,403		20,274,944
Consumer lending
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	16,470,900		16,054,535
Consumer lending \| Single-family residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	14,569,997		14,175,446
Allowance for loan losses	(51,997)	(46,929)	(44,816)	(49,523)	(55,922)	(55,018)
Consumer lending \| Home equity lines of credit (“HELOCs”)
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	1,850,965		1,811,628
Allowance for loan losses	(5,256)	(4,879)	(3,132)	(3,340)	(3,563)	(3,947)
Consumer lending \| Total residential mortgage
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	16,420,962		15,987,074
Consumer lending \| Other consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	49,938		67,461
Allowance for loan losses	$ (1,325)	$ (1,338)	$ (1,494)	$ (1,577)	$ (1,467)	$ (1,657)