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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	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	$ 53,253,181		$ 52,210,782
Allowance for loan losses	(696,485)	$ (683,794)	(668,743)	$ (655,523)	$ (635,400)	$ (595,645)
Loans held-for-investment, net	52,556,696		51,542,039
Net deferred loan fees and net unamortized premiums	(52,000)		(71,000)
Commercial lending
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	37,471,467		37,045,191
Commercial lending \| C&I
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	17,068,002		16,581,079
Allowance for loan losses	(378,315)	(379,984)	(392,685)	(383,677)	(375,333)	(371,700)
Commercial lending \| CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	14,568,209		14,777,081
Allowance for loan losses	(221,244)	(194,794)	(170,592)	(178,040)	(168,505)	(149,864)
Commercial lending \| Multifamily residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	5,141,481		5,023,163
Allowance for loan losses	(31,782)	(40,254)	(34,375)	(24,162)	(22,938)	(23,373)
Commercial lending \| Construction and land
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	693,775		663,868
Allowance for loan losses	(12,208)	(14,322)	(10,469)	(9,216)	(11,325)	(9,109)
Commercial lending \| Total CRE
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	20,403,465		20,464,112
Consumer lending
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	15,781,714		15,165,591
Consumer lending \| Single-family residential
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	13,963,097		13,383,060
Allowance for loan losses	(48,231)	(49,523)	(55,018)	(54,930)	(51,513)	(35,564)
Consumer lending \| HELOCs
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	1,760,716		1,722,204
Allowance for loan losses	(3,210)	(3,340)	(3,947)	(3,795)	(4,526)	(4,475)
Consumer lending \| Total residential mortgage
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	15,723,813		15,105,264
Consumer lending \| Other consumer
LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES
Loans held-for-investment	57,901		60,327
Allowance for loan losses	$ (1,495)	$ (1,577)	$ (1,657)	$ (1,703)	$ (1,260)	$ (1,560)