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Investment Securities (Tables) | 12 Months Ended
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Jun. 30, 2025
Investment Securities |
Schedule of available-for-sale securities reconciliation | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  | ​ |  | Gross |  | Gross |  | Estimated |  | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair | ​ | Carrying
June 30, 2025 | ​ | Cost | ​ | Gains | ​ | (Losses) | ​ | Value | ​ | Value
(In Thousands) |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Held to maturity |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
U.S. government sponsored enterprise MBS(1) | ​ | $ | 104,549 | ​ | $ | 127 | ​ | $ | (10,305) | ​ | $ | 94,371 | ​ | $ | 104,549
U.S. government sponsored enterprise CMO(2) | ​ | ​ | 4,525 | ​ | ​ | 14 | ​ | ​ | (108) | ​ | ​ | 4,431 | ​ | ​ | 4,525
U.S. SBA securities(3) | ​ |  | 325 | ​ |  | — | ​ |  | (1) | ​ |  | 324 | ​ |  | 325
Total investment securities - held to maturity | ​ | ​ | 109,399 | ​ | ​ | 141 | ​ | ​ | (10,414) | ​ | ​ | 99,126 | ​ | ​ | 109,399
​ | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Available for sale | ​ |  |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
U.S. government agency MBS(1) | ​ | ​ | 1,072 | ​ | ​ | 10 | ​ | ​ | — | ​ | ​ | 1,082 | ​ | ​ | 1,082
U.S. government sponsored enterprise MBS(1) | ​ |  | 436 | ​ | ​ | 10 | ​ | ​ | — | ​ | ​ | 446 | ​ | ​ | 446
Private issue CMO(2) | ​ |  | 79 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 79 | ​ | ​ | 79
Total investment securities - available for sale | ​ | ​ | 1,587 | ​ | ​ | 20 | ​ | ​ | — | ​ | ​ | 1,607 | ​ | ​ | 1,607
Total investment securities | ​ | $ | 110,986 | ​ | $ | 161 | ​ | $ | (10,414) | ​ | $ | 100,733 | ​ | $ | 111,006
​
(1) | Mortgage-backed securities (“MBS”).
(2) | Collateralized mortgage obligations (“CMO”).
(3) | Small Business Administration ("SBA").
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  | ​ |  | Gross |  | Gross |  | Estimated |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair | ​ | Carrying
June 30, 2024 | ​ | Cost | ​ | Gains | ​ | (Losses) | ​ | Value | ​ | Value
(In Thousands) |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Held to maturity |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
U.S. government sponsored enterprise MBS | ​ | $ | 125,883 | ​ | $ | 76 | ​ | $ | (15,481) | ​ | $ | 110,478 | ​ | $ | 125,883
U.S. government sponsored enterprise CMO | ​ | ​ | 3,713 | ​ | ​ | — | ​ | ​ | (253) | ​ | ​ | 3,460 | ​ | ​ | 3,713
U.S. SBA securities | ​ |  | 455 | ​ |  | — | ​ |  | — | ​ |  | 455 | ​ |  | 455
Total investment securities - held to maturity | ​ | ​ | 130,051 | ​ | ​ | 76 | ​ | ​ | (15,734) | ​ | ​ | 114,393 | ​ | ​ | 130,051
​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Available for sale | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
U.S. government agency MBS | ​ | ​ | 1,222 | ​ | ​ | — | ​ | ​ | (14) | ​ | ​ | 1,208 | ​ | ​ | 1,208
U.S. government sponsored enterprise MBS | ​ | ​ | 548 | ​ | ​ | 5 | ​ | ​ | — | ​ | ​ | 553 | ​ | ​ | 553
Private issue CMO | ​ | ​ | 91 | ​ | ​ | — | ​ | ​ | (3) | ​ | ​ | 88 | ​ | ​ | 88
Total investment securities - available for sale | ​ | ​ | 1,861 | ​ | ​ | 5 | ​ | ​ | (17) | ​ | ​ | 1,849 | ​ | ​ | 1,849
Total investment securities | ​ | $ | 131,912 | ​ | $ | 81 | ​ | $ | (15,751) | ​ | $ | 116,242 | ​ | $ | 131,900
Schedule of investments with unrealized loss position | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of June 30, 2025 | ​ | Unrealized Holding Losses | ​ | Unrealized Holding Losses | ​ | Unrealized Holding Losses
(In Thousands) | ​ | Less Than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Held to maturity | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government sponsored enterprise MBS | ​ | $ | — | ​ | $ | — | ​ | $ | 90,022 | ​ | $ | 10,305 | ​ | $ | 90,022 | ​ | $ | 10,305
U.S. government sponsored enterprise CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,435 | ​ | ​ | 108 | ​ | ​ | 3,435 | ​ | ​ | 108
U.S. SBA securities | ​ | ​ | 324 | ​ | $ | 1 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 324 | ​ | ​ | 1
Total investment securities - held to maturity | ​ | ​ | 324 | ​ | ​ | 1 | ​ | ​ | 93,457 | ​ | ​ | 10,413 | ​ | ​ | 93,781 | ​ | ​ | 10,414
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S government agency MBS | ​ | ​ | 37 | ​ | ​ | — | ​ | ​ | 13 | ​ | ​ | — | ​ | ​ | 50 | ​ | ​ | —
Private issue CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 17 | ​ | ​ | — | ​ | ​ | 17 | ​ | ​ | —
Total investment securities - available for sale | ​ | ​ | 37 | ​ | ​ | — | ​ | ​ | 30 | ​ | ​ | — | ​ | ​ | 67 | ​ | ​ | —
Total investment securities | ​ | $ | 361 | ​ | $ | 1 | ​ | $ | 93,487 | ​ | $ | 10,413 | ​ | $ | 93,848 | ​ | $ | 10,414
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of June 30, 2024 | ​ | Unrealized Holding Losses | ​ | Unrealized Holding Losses | ​ | Unrealized Holding Losses
(In Thousands) | ​ | Less Than 12 Months | ​ | 12 Months or More | ​ | Total
​ | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized | ​ | Fair | ​ | Unrealized
Description of Securities |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
Held to maturity | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. government sponsored enterprise MBS | ​ | $ | — | ​ | $ | — | ​ | $ | 105,530 | ​ | $ | 15,481 | ​ | $ | 105,530 | ​ | $ | 15,481
U.S. government sponsored enterprise CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,460 | ​ | ​ | 253 | ​ | ​ | 3,460 | ​ | ​ | 253
U.S. SBA securities | ​ | ​ | 455 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 455 | ​ | ​ | —
Total investment securities - held to maturity | ​ | ​ | 455 | ​ | ​ | — | ​ | ​ | 108,990 | ​ | ​ | 15,734 | ​ | ​ | 109,445 | ​ | ​ | 15,734
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S government agency MBS | ​ | ​ | 91 | ​ | ​ | — | ​ | ​ | 1,117 | ​ | ​ | 14 | ​ | ​ | 1,208 | ​ | ​ | 14
U.S. government sponsored enterprise MBS | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 8 | ​ | ​ | — | ​ | ​ | 8 | ​ | ​ | —
Private issue CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 88 | ​ | ​ | 3 | ​ | ​ | 88 | ​ | ​ | 3
Total investment securities - available for sale | ​ | ​ | 91 | ​ | ​ | — | ​ | ​ | 1,213 | ​ | ​ | 17 | ​ | ​ | 1,304 | ​ | ​ | 17
Total investment securities | ​ | $ | 546 | ​ | $ | — | ​ | $ | 110,203 | ​ | $ | 15,751 | ​ | $ | 110,749 | ​ | $ | 15,751
Schedule of investments classified by contractual maturity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, 2025 | ​ | June 30, 2024
​ |  | ​ | ​ |  | Estimated |  | ​ | ​ |  | Estimated
​ | ​ | Amortized | ​ | Fair | ​ | Amortized | ​ | Fair
(In Thousands) | ​ | Cost | ​ | Value | ​ | Cost | ​ | Value
Held to maturity |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Due in one year or less | ​ | $ | 69 | ​ | $ | 68 | ​ | $ | 349 | ​ | $ | 343
Due after one through five years | ​ |  | 4,921 | ​ |  | 4,760 | ​ |  | 4,328 | ​ |  | 4,167
Due after five through ten years | ​ |  | 40,773 | ​ |  | 38,224 | ​ |  | 49,331 | ​ |  | 44,830
Due after ten years | ​ |  | 63,636 | ​ |  | 56,074 | ​ |  | 76,043 | ​ |  | 65,053
Total investment securities - held to maturity | ​ | ​ | 109,399 | ​ | ​ | 99,126 | ​ | ​ | 130,051 | ​ | ​ | 114,393
​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Available for sale | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Due in one year or less | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Due after one through five years | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Due after five through ten years | ​ | ​ | 1,483 | ​ | ​ | 1,501 | ​ | ​ | 1,055 | ​ | ​ | 1,053
Due after ten years | ​ | ​ | 104 | ​ | ​ | 106 | ​ | ​ | 806 | ​ | ​ | 796
Total investment securities - available for sale | ​ | ​ | 1,587 | ​ | ​ | 1,607 | ​ | ​ | 1,861 | ​ | ​ | 1,849
Total investment securities | ​ | $ | 110,986 | ​ | $ | 100,733 | ​ | $ | 131,912 | ​ | $ | 116,242
​

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