CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022
Statement of Financial Position [Abstract]
Available-for-sale, amortized cost	$ 1,408,194	$ 1,462,124
Held-to-maturity, fair value	$ 136,125	$ 108,118
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	800,000,000	800,000,000
Common stock, shares issued (in shares)	66,679,988	68,666,323
Common stock, shares outstanding (in shares)	66,679,988	68,666,323
Employee stock ownership plan (ESOP), number of suspense shares (in shares)	2,408,373	2,558,895