Fair Value of Financial Instruments - Schedule of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Jun. 30, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value	$ 1,286,354	$ 1,344,093
Investment securities held to maturity (fair value of $138,393 and $108,118, respectively)	153,786	118,291
Fair Value	138,393	108,118
Loans held-for-sale	12,940	28,874
Net loans receivable	5,935,256	5,370,787
Accrued interest receivable	27,368	20,466
Net Amounts Presented	63,617	41,223
Interest rate contracts	2,500
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	75,660	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	10	2
Net Amounts Presented	0	0
Borrowings	0	0
Interest payable on deposits	1,506	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	3,868,949	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	1,286,354	1,344,093
Fair Value	138,393	108,118
Loans held-for-sale	12,975	28,831
Net loans receivable	0	0
FHLB Stock	0	0
Accrued interest receivable	8,369	5,210
Net Amounts Presented	63,617	41,223
Borrowings	0	0
Interest payable on deposits	0	0
Interest payable on borrowings	0	0
Interest rate contracts	2,500
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	5,540,440	5,215,079
FHLB Stock	0	0
Accrued interest receivable	18,989	15,254
Net Amounts Presented	0	0
Borrowings	1,379,640
Interest payable on deposits	3,431
Interest payable on borrowings	3,664
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	2,060,954	1,866,341
Carrying Amount [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	75,660	101,615
Fair Value	1,286,354	1,344,093
Investment securities held to maturity (fair value of $138,393 and $108,118, respectively)	153,786	118,291
Loans held-for-sale	12,940	28,874
Net loans receivable	5,935,256	5,370,787
FHLB Stock	69,022	47,144
Accrued interest receivable	27,368	20,466
Net Amounts Presented	63,617	41,223
Borrowings	1,383,573	901,337
Interest payable on deposits	4,937	722
Interest payable on borrowings	3,664	1,611
Interest rate contracts	2,500
Carrying Amount [Member] \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	3,868,949	3,972,694
Carrying Amount [Member] \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	2,102,422	1,889,562
Fair Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Cash and cash equivalents	75,660	101,615
Fair Value	1,286,354	1,344,093
Fair Value	138,393	108,118
Loans held-for-sale	12,975	28,831
Net loans receivable	5,540,440	5,215,079
FHLB Stock	0	0
Accrued interest receivable	27,368	20,466
Net Amounts Presented	63,617	41,223
Borrowings	1,379,640	900,505
Interest payable on deposits	4,937	722
Interest payable on borrowings	3,664	1,611
Interest rate contracts	2,500
Fair Value [Member] \| Deposits other than certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	3,868,949	3,972,694
Fair Value [Member] \| Certificates of deposits
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Deposits	$ 2,060,954	1,866,341
Fair Value [Member] \| 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 currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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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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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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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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Fair value, after the effects of master netting arrangements, of a financial liability or 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 liabilities not subject to a master netting arrangement and not elected to be offset.

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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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Amount excluding accrued interest, after allowance for credit loss, of financing receivable.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

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