Securities - Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2025 USD ($) Security	Jun. 30, 2025 USD ($) Security
Securities available-for-sale:
Less than 12 months, fair value	$ 456	$ 241
Less than 12 months, unrealized losses	$ 44	$ 1
Less than 12 months, number of securities (in Security) | Security	1	1
More than 12 months, fair value	$ 133,710	$ 133,287
More than 12 months, unrealized losses	$ 17,892	$ 19,590
More than 12 months, number of securities (in Security) | Security	69	73
Total, fair value	$ 134,166	$ 133,528
Total, unrealized losses	$ 17,936	$ 19,591
Total, number of securities (in Security) | Security	70	74
Securities held-to-maturity:
Less than 12 months, fair value	$ 12,500	$ 36,752
Less than 12 months, unrealized losses	$ 321	$ 535
Less than 12 months, number of securities (in Security) | Security	58	161
More than 12 months, fair value	$ 411,591	$ 413,533
More than 12 months, unrealized losses	$ 40,366	$ 48,407
More than 12 months, number of securities (in Security) | Security	1,497	1,604
Total, fair value	$ 424,091	$ 450,285
Total, unrealized losses	$ 40,687	$ 48,942
Total, number of securities (in Security) | Security	1,555	1,765
Less than 12 months, fair value	$ 12,956	$ 36,993
Less than 12 months, unrealized losses	$ 365	$ 536
Less than 12 months, number of securities (in Security) | Security	59	162
More than 12 months, fair value	$ 545,301	$ 546,820
More than 12 months, unrealized losses	$ 58,258	$ 67,997
More than 12 months, number of securities (in Security) | Security	1,566	1,677
Total, fair value	$ 558,257	$ 583,813
Total, unrealized losses	$ 58,623	$ 68,533
Total, number of securities (in Security) | Security	1,625	1,839
U.S. Treasury Securities [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 0	$ 241
Less than 12 months, unrealized losses	$ 0	$ 1
Less than 12 months, number of securities (in Security) | Security	0	1
More than 12 months, fair value	$ 10,296	$ 10,212
More than 12 months, unrealized losses	$ 272	$ 361
More than 12 months, number of securities (in Security) | Security	5	5
Total, fair value	$ 10,296	$ 10,453
Total, unrealized losses	$ 272	$ 362
Total, number of securities (in Security) | Security	5	6
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	$ 15,110	$ 14,982
More than 12 months, unrealized losses	$ 754	$ 868
More than 12 months, number of securities (in Security) | Security	5	5
Total, fair value	$ 15,110	$ 14,982
Total, unrealized losses	$ 754	$ 868
Total, number of securities (in Security) | Security	5	5
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	$ 11,752	$ 11,644
More than 12 months, unrealized losses	$ 1,274	$ 1,385
More than 12 months, number of securities (in Security) | Security	5	5
Total, fair value	$ 11,752	$ 11,644
Total, unrealized losses	$ 1,274	$ 1,385
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	$ 43	$ 43
More than 12 months, unrealized losses	$ 0	$ 0
More than 12 months, number of securities (in Security) | Security	1	1
Total, fair value	$ 43	$ 43
Total, unrealized losses	$ 0	$ 0
Total, number of securities (in Security) | Security	1	1
Securities held-to-maturity:
Less than 12 months, fair value	$ 10,189	$ 23,577
Less than 12 months, unrealized losses	$ 271	$ 339
Less than 12 months, number of securities (in Security) | Security	55	154
More than 12 months, fair value	$ 225,504	$ 231,645
More than 12 months, unrealized losses	$ 25,306	$ 31,689
More than 12 months, number of securities (in Security) | Security	1,404	1,511
Total, fair value	$ 235,693	$ 255,222
Total, unrealized losses	$ 25,577	$ 32,028
Total, number of securities (in Security) | Security	1,459	1,665
Mortgage-backed Securities-Residential [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	$ 20,460	$ 20,872
More than 12 months, unrealized losses	$ 2,741	$ 3,007
More than 12 months, number of securities (in Security) | Security	18	21
Total, fair value	$ 20,460	$ 20,872
Total, unrealized losses	$ 2,741	$ 3,007
Total, number of securities (in Security) | Security	18	21
Securities held-to-maturity:
Less than 12 months, fair value	$ 1,854	$ 9,470
Less than 12 months, unrealized losses	$ 7	$ 151
Less than 12 months, number of securities (in Security) | Security	2	4
More than 12 months, fair value	$ 35,064	$ 26,541
More than 12 months, unrealized losses	$ 2,117	$ 2,176
More than 12 months, number of securities (in Security) | Security	29	26
Total, fair value	$ 36,918	$ 36,011
Total, unrealized losses	$ 2,124	$ 2,327
Total, number of securities (in Security) | Security	31	30
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	$ 75,536	$ 74,597
More than 12 months, unrealized losses	$ 13,240	$ 14,277
More than 12 months, number of securities (in Security) | Security	30	30
Total, fair value	$ 75,536	$ 74,597
Total, unrealized losses	$ 13,240	$ 14,277
Total, number of securities (in Security) | Security	30	30
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	$ 115,849	$ 118,156
More than 12 months, unrealized losses	$ 10,803	$ 11,963
More than 12 months, number of securities (in Security) | Security	44	45
Total, fair value	$ 115,849	$ 118,156
Total, unrealized losses	$ 10,803	$ 11,963
Total, number of securities (in Security) | Security	44	45
Corporate Debt Securities [Member]
Securities available-for-sale:
Less than 12 months, fair value	$ 456	$ 0
Less than 12 months, unrealized losses	$ 44	$ 0
Less than 12 months, number of securities (in Security) | Security	1	0
More than 12 months, fair value	$ 15,623	$ 15,919
More than 12 months, unrealized losses	$ 365	$ 560
More than 12 months, number of securities (in Security) | Security	10	11
Total, fair value	$ 16,079	$ 15,919
Total, unrealized losses	$ 409	$ 560
Total, number of securities (in Security) | Security	11	11
Securities held-to-maturity:
Less than 12 months, fair value	$ 457	$ 3,705
Less than 12 months, unrealized losses	$ 43	$ 45
Less than 12 months, number of securities (in Security) | Security	1	3
More than 12 months, fair value	$ 20,064	$ 22,209
More than 12 months, unrealized losses	$ 1,386	$ 1,711
More than 12 months, number of securities (in Security) | Security	15	17
Total, fair value	$ 20,521	$ 25,914
Total, unrealized losses	$ 1,429	$ 1,756
Total, number of securities (in Security) | Security	16	20