Loans Receivable - Schedule of Loans Receivable (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	$ 5,436,576	$ 4,880,310
Unaccreted yield adjustments	(18,731)	(28,916)
Loans receivable	5,417,845	4,851,394
One-to Four-Family Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	1,645,816	1,447,721
Home Equity Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	42,028	47,871
Other Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	2,866	3,259
Consumer Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	44,894	51,130
Multi-Family Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	2,409,090	2,039,260
Commercial Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	176,807	168,951
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	140,131	93,804
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	3,745,866	3,381,459
Nonresidential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, Gross	$ 1,019,838	$ 1,079,444

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.

No definition available.

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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