LOANS & ALLOWANCE FOR CREDIT LOSSES - SCHEDULE OF COMPOSITION OF LOAN PORTFOLIO (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 26,096,037	$ 21,551,697
Allowance for credit losses - loans	(347,375)	(290,049)	$ (260,542)	$ (166,680)
Unaccreted premiums (discounts) and loan fees	(153,259)	(212,038)
Total net loans	25,595,403	21,049,610
Single Family - Mortgage & Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,581,772	4,395,278
Allowance for credit losses - loans	(7,356)	(12,111)	(16,943)	(17,503)
Multifamily and Commercial Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,484,290	2,940,739
Allowance for credit losses - loans	(21,104)	(26,240)	(70,771)	(16,848)
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,867,851	6,937,187
Allowance for credit losses - loans	(121,552)	(113,804)	(87,780)	(72,755)
Commercial & Industrial - Non-RE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	9,495,647	6,795,497
Allowance for credit losses - loans	(177,084)	(121,639)	(76,032)	(46,347)
Auto & Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	666,477	482,996
Allowance for credit losses - loans	$ (20,279)	$ (16,255)	$ (9,016)	$ (13,227)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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