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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
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-URI https://asc.fasb.org/1943274/2147481598/310-20-45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
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LOANS & ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF LOAN PORTFOLIO COMPOSITION (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Dec. 07, 2023	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	$ 20,729,256		$ 19,802,811
Allowance for credit losses - loans	(279,950)	$ (270,605)	(260,542)	$ (257,522)	$ (251,749)		$ (166,680)
Unaccreted premiums (discounts) and loan fees	(255,676)		(310,884)
Total net loans	20,193,630		19,231,385
Single Family - Mortgage & Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	4,194,821		4,178,832
Allowance for credit losses - loans	(15,404)	(16,104)	(16,943)	(16,965)	(15,356)		(17,503)
Multifamily and Commercial Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	3,340,618		3,861,931
Allowance for credit losses - loans	(47,659)	(56,077)	(70,771)	(76,358)	(78,353)		(16,848)
Multifamily and Commercial Mortgage \| Real Estate Loan Portfolios
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	280,000		284,000
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	6,356,559		6,088,622
Allowance for credit losses - loans	(89,839)	(102,454)	(87,780)	(82,842)	(77,778)		(72,755)
Commercial Real Estate \| Real Estate Loan Portfolios
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	44,500		44,500
Total net loans						$ 1,300,000
Commercial & Industrial - Non-RE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	6,389,964		5,241,766
Allowance for credit losses - loans	(113,623)	(84,455)	(76,032)	(72,010)	(69,201)		(46,347)
Auto & Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	447,294		431,660
Allowance for credit losses - loans	$ (13,425)	$ (11,515)	$ (9,016)	$ (9,347)	$ (11,061)		$ (13,227)