Securities - Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	Mar. 31, 2025 USD ($) Security	Jun. 30, 2024 USD ($) Security
Securities available-for-sale:
Less than 12 months, fair value	$ 250	$ 26,487
Less than 12 months, unrealized losses	$ 1	$ 223
Less than 12 months, number of securities (in Security) | Security	3	3
More than 12 months, fair value	$ 132,745	$ 139,017
More than 12 months, unrealized losses	$ 20,907	$ 26,865
More than 12 months, number of securities (in Security) | Security	73	84
Total, fair value	$ 132,995	$ 165,504
Total, unrealized losses	$ 20,908	$ 27,088
Total, number of securities (in Security) | Security	76	87
Securities held-to-maturity:
Less than 12 months, fair value	$ 64,715	$ 32,215
Less than 12 months, unrealized losses	$ 832	$ 474
Less than 12 months, number of securities (in Security) | Security	248	294
More than 12 months, fair value	$ 434,687	$ 476,309
More than 12 months, unrealized losses	$ 53,240	$ 64,726
More than 12 months, number of securities (in Security) | Security	1,700	2,148
Total, fair value	$ 499,402	$ 508,524
Total, unrealized losses	$ 54,072	$ 65,200
Total, number of securities (in Security) | Security	1,948	2,442
Less than 12 months, fair value	$ 64,965	$ 58,702
Less than 12 months, unrealized losses	$ 833	$ 697
Less than 12 months, number of securities (in Security) | Security	251	297
More than 12 months, fair value	$ 567,432	$ 615,326
More than 12 months, unrealized losses	$ 74,147	$ 91,591
More than 12 months, number of securities (in Security) | Security	1,773	2,232
Total, fair value	$ 632,397	$ 674,028
Total, unrealized losses	$ 74,980	$ 92,288
Total, number of securities (in Security) | Security	2,024	2,529
U.S. Treasury Securities [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 239	$ 24,574
Less than 12 months, unrealized losses	$ 1	$ 215
Less than 12 months, number of securities (in Security) | Security	1	1
More than 12 months, fair value	$ 10,136	$ 16,621
More than 12 months, unrealized losses	$ 443	$ 1,614
More than 12 months, number of securities (in Security) | Security	5	8
Total, fair value	$ 10,375	$ 41,195
Total, unrealized losses	$ 444	$ 1,829
Total, number of securities (in Security) | Security	6	9
Securities held-to-maturity:
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized losses	$ 0	$ 0
Less than 12 months, number of securities (in Security) | Security	0	0
More than 12 months, fair value	$ 19,800	$ 22,036
More than 12 months, unrealized losses	$ 1,036	$ 1,749
More than 12 months, number of securities (in Security) | Security	6	7
Total, fair value	$ 19,800	$ 22,036
Total, unrealized losses	$ 1,036	$ 1,749
Total, number of securities (in Security) | Security	6	7
U.S. Government Sponsored Enterprises [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized losses	$ 0	$ 0
Less than 12 months, number of securities (in Security) | Security	0	0
More than 12 months, fair value	$ 11,476	$ 10,974
More than 12 months, unrealized losses	$ 1,556	$ 2,068
More than 12 months, number of securities (in Security) | Security	5	5
Total, fair value	$ 11,476	$ 10,974
Total, unrealized losses	$ 1,556	$ 2,068
Total, number of securities (in Security) | Security	5	5
State and Political Subdivisions [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized losses	$ 0	$ 0
Less than 12 months, number of securities (in Security) | Security	0	0
More than 12 months, fair value	$ 42	$ 62
More than 12 months, unrealized losses	$ 0	$ 1
More than 12 months, number of securities (in Security) | Security	1	1
Total, fair value	$ 42	$ 62
Total, unrealized losses	$ 0	$ 1
Total, number of securities (in Security) | Security	1	1
Securities held-to-maturity:
Less than 12 months, fair value	$ 32,802	$ 32,215
Less than 12 months, unrealized losses	$ 612	$ 474
Less than 12 months, number of securities (in Security) | Security	240	294
More than 12 months, fair value	$ 239,101	$ 278,521
More than 12 months, unrealized losses	$ 34,802	$ 39,761
More than 12 months, number of securities (in Security) | Security	1,600	2,025
Total, fair value	$ 271,903	$ 310,736
Total, unrealized losses	$ 35,414	$ 40,235
Total, number of securities (in Security) | Security	1,840	2,319
Mortgage-backed Securities-Residential [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 11	$ 1,913
Less than 12 months, unrealized losses		$ 8
Less than 12 months, number of securities (in Security) | Security	2	2
More than 12 months, fair value	$ 21,305	$ 22,700
More than 12 months, unrealized losses	$ 3,253	$ 3,886
More than 12 months, number of securities (in Security) | Security	21	23
Total, fair value	$ 21,316	$ 24,613
Total, unrealized losses	$ 3,253	$ 3,894
Total, number of securities (in Security) | Security	23	25
Securities held-to-maturity:
Less than 12 months, fair value	$ 31,424	$ 0
Less than 12 months, unrealized losses	$ 209	$ 0
Less than 12 months, number of securities (in Security) | Security	7	0
More than 12 months, fair value	$ 27,314	$ 29,510
More than 12 months, unrealized losses	$ 2,461	$ 3,314
More than 12 months, number of securities (in Security) | Security	27	28
Total, fair value	$ 58,738	$ 29,510
Total, unrealized losses	$ 2,670	$ 3,314
Total, number of securities (in Security) | Security	34	28
Mortgage-backed Securities-Multi-family [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized losses	$ 0	$ 0
Less than 12 months, number of securities (in Security) | Security	0	0
More than 12 months, fair value	$ 73,985	$ 72,300
More than 12 months, unrealized losses	$ 14,985	$ 17,961
More than 12 months, number of securities (in Security) | Security	30	31
Total, fair value	$ 73,985	$ 72,300
Total, unrealized losses	$ 14,985	$ 17,961
Total, number of securities (in Security) | Security	30	31
Securities held-to-maturity:
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized losses	$ 0	$ 0
Less than 12 months, number of securities (in Security) | Security	0	0
More than 12 months, fair value	$ 126,603	$ 125,966
More than 12 months, unrealized losses	$ 13,242	$ 17,397
More than 12 months, number of securities (in Security) | Security	49	47
Total, fair value	$ 126,603	$ 125,966
Total, unrealized losses	$ 13,242	$ 17,397
Total, number of securities (in Security) | Security	49	47
Corporate Debt Securities [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 0	$ 0
Less than 12 months, unrealized losses	$ 0	$ 0
Less than 12 months, number of securities (in Security) | Security	0	0
More than 12 months, fair value	$ 15,801	$ 16,360
More than 12 months, unrealized losses	$ 670	$ 1,335
More than 12 months, number of securities (in Security) | Security	11	16
Total, fair value	$ 15,801	$ 16,360
Total, unrealized losses	$ 670	$ 1,335
Total, number of securities (in Security) | Security	11	16
Securities held-to-maturity:
Less than 12 months, fair value	$ 489	$ 0
Less than 12 months, unrealized losses	$ 11	$ 0
Less than 12 months, number of securities (in Security) | Security	1	0
More than 12 months, fair value	$ 21,869	$ 20,276
More than 12 months, unrealized losses	$ 1,699	$ 2,505
More than 12 months, number of securities (in Security) | Security	18	41
Total, fair value	$ 22,358	$ 20,276
Total, unrealized losses	$ 1,710	$ 2,505
Total, number of securities (in Security) | Security	19	41