Securities, Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022
Available-for-sale Debt Securities, Amortized Cost [Abstract]
Within one year	$ 189,675
After one year through five years	25,056
After five years through ten years	24,614
After ten years	1,500
Total	240,845
Mortgage-backed securities	125,353
Amortized cost	366,198	$ 431,625
Available-for-sale Debt Securities, Fair Value [Abstract]
Within one year	188,822
After one year through five years	22,495
After five years through ten years	20,701
After ten years	1,181
Total	233,199
Mortgage-backed securities	100,404
Estimated fair value	333,603	408,062
Held-to-maturity Debt Securities, Amortized Cost [Abstract]
Within one year	65,466
After one year through five years	168,220
After five years through ten years	137,726
After ten years	175,631
Total	547,043
Mortgage-backed securities	205,826
Amortized cost	752,869	761,852
Held-to-maturity Debt Securities, Fair Value [Abstract]
Within one year	64,499
After one year through five years	160,831
After five years through ten years	126,601
After ten years	140,577
Total	492,508
Mortgage-backed securities	180,928
Estimated fair value	673,436	710,453
Total Debt Securities [Abstract]
Amortized cost	1,119,067	1,193,477
Estimated fair value	$ 1,007,039	$ 1,118,515