FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value	$ 1,267,066	$ 1,344,093
Investment securities held to maturity (fair value of $136,125 and $108,118, respectively)	149,764	118,291
Fair Value	136,125	108,118
Loans held-for-sale	5,401	28,874
Net loans receivable	5,917,203	5,370,787
Accrued interest receivable	28,794	20,466
Net Amounts Presented	47,816	41,223
Interest rate contracts	7,847
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	194,568	101,615
Fair Value	0	0
Fair Value	0	0
Loans held-for-sale	0	0
Net loans receivable	0	0
FHLB Stock	0	0
Accrued interest receivable	40	2
Net Amounts Presented	0	0
Borrowings	0	0
Interest payable on deposits	1,997	147
Interest payable on borrowings	0	0
Interest rate contracts	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	3,715,060	3,972,694
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	0	0
Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Fair Value	1,267,066	1,344,093
Fair Value	136,125	108,118
Loans held-for-sale	5,435	28,831
Net loans receivable	0	0
FHLB Stock	0	0
Accrued interest receivable	9,264	5,210
Net Amounts Presented	47,816	41,223
Borrowings	0	0
Interest payable on deposits	0	0
Interest payable on borrowings	0	0
Interest rate contracts	7,847
Significant Other Observable Inputs (Level 2) \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	0	0
Significant Other Observable Inputs (Level 2) \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	0	0
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Fair Value	0	0
Fair Value	0	0
Loans held-for-sale	0	0
Net loans receivable	5,489,346	5,215,079
FHLB Stock	0	0
Accrued interest receivable	19,490	15,254
Net Amounts Presented	0	0
Borrowings	1,608,219
Interest payable on deposits	5,222
Interest payable on borrowings	4,187
Interest rate contracts	0
Significant Unobservable Inputs (Level 3) \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	0	0
Significant Unobservable Inputs (Level 3) \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	2,055,270	1,866,341
Carrying Amount
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	194,568	101,615
Fair Value	1,267,066	1,344,093
Investment securities held to maturity (fair value of $136,125 and $108,118, respectively)	149,764	118,291
Loans held-for-sale	5,401	28,874
Net loans receivable	5,917,203	5,370,787
FHLB Stock	76,319	47,144
Accrued interest receivable	28,794	20,466
Net Amounts Presented	47,816	41,223
Borrowings	1,611,692	901,337
Interest payable on deposits	7,219	722
Interest payable on borrowings	4,187	1,611
Interest rate contracts	7,847
Carrying Amount \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	3,715,060	3,972,694
Carrying Amount \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	2,088,344	1,889,562
Fair Value
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	194,568	101,615
Fair Value	1,267,066	1,344,093
Fair Value	136,125	108,118
Loans held-for-sale	5,435	28,831
Net loans receivable	5,489,346	5,215,079
FHLB Stock	0	0
Accrued interest receivable	28,794	20,466
Net Amounts Presented	47,816	41,223
Borrowings	1,608,219	900,505
Interest payable on deposits	7,219	722
Interest payable on borrowings	4,187	1,611
Interest rate contracts	7,847
Fair Value \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	3,715,060	3,972,694
Fair Value \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	$ 2,055,270	1,866,341
Fair Value \| Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Borrowings		900,505
Interest payable on deposits		575
Interest payable on borrowings		$ 1,611

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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