Securities, Securities by Contractual Maturity (Details) - USD ($) $ in Thousands		Mar. 31, 2024	Jun. 30, 2023
Securities available-for-sale, Amortized Cost [Abstract]
Within one year		$ 198,521
After one year through five years		39,286
After five years through ten years		8,910
After ten years		1,500
Total securities available-for-sale		248,217
Mortgage-backed and asset-backed securities		123,969
Amortized cost	[1]	372,186	$ 309,153
Securities available-for-sale, Fair Value [Abstract]
Within one year		198,954
After one year through five years		36,160
After five years through ten years		7,273
After ten years		1,237
Total securities available-for-sale		243,624
Mortgage-backed and asset-backed securities		101,895
Fair value		345,519	281,133
Securities held-to-maturity, Amortized Cost [Abstract]
Within one year		63,451
After one year through five years		163,298
After five years through ten years		159,777
After ten years		135,162
Total securities held-to-maturity		521,688
Mortgage-backed securities		179,181
Amortized cost	[2]	700,869	726,363
Securities held-to-maturity, Fair Value [Abstract]
Within one year		62,980
After one year through five years		159,412
After five years through ten years		148,919
After ten years		118,312
Total securities held-to-maturity		489,623
Mortgage-backed securities		157,881
Fair value		647,504	$ 671,066
Total Debt Securities [Abstract]
Amortized cost		1,073,055
Fair value		$ 993,023

[1] Amortized cost excludes accrued interest receivable of $4.8 million and $2.9 million at March 31, 2024 and June 30, 2023, respectively, which is included in accrued interest receivable in the consolidated statements of financial condition.

[2] Amortized cost excludes accrued interest receivable of $5.3 million and $3.9 million at March 31, 2024 and June 30, 2023, respectively, which is included in accrued interest receivable in the consolidated statements of financial condition.