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Investment Securities | 6 Months Ended
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Dec. 31, 2023
Investment Securities |
Investment Securities | Note 4: Investment Securities The amortized cost and estimated fair value of investment securities as of December 31, 2023 and June 30, 2023 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  |  | ​ |  | Gross |  | Gross |  | Estimated |  | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair | ​ | Carrying
December 31, 2023 | ​ | Cost | ​ | Gains | ​ | (Losses) | ​ | Value | ​ | Value
(In Thousands) |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Held to maturity |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
U.S. government sponsored enterprise MBS(1) | ​ | $ | 137,205 | ​ | $ | 63 | ​ | $ | (15,061) | ​ | $ | 122,207 | ​ | $ | 137,205
U.S. government sponsored enterprise CMO(2) | ​ | ​ | 3,857 | ​ | ​ | — | ​ | ​ | (256) | ​ | ​ | 3,601 | ​ | ​ | 3,857
U.S. SBA securities(3) | ​ |  | 630 | ​ |  | — | ​ |  | (1) | ​ |  | 629 | ​ |  | 630
Total investment securities - held to maturity | ​ | ​ | 141,692 | ​ | ​ | 63 | ​ | ​ | (15,318) | ​ | ​ | 126,437 | ​ | ​ | 141,692
​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Available for sale | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
U.S. government agency MBS | ​ | ​ | 1,328 | ​ | ​ | — | ​ | ​ | (14) | ​ | ​ | 1,314 | ​ | ​ | 1,314
U.S. government sponsored enterprise MBS | ​ | ​ | 587 | ​ | ​ | 1 | ​ | ​ | (4) | ​ | ​ | 584 | ​ |  | 584
Private issue CMO | ​ |  | 99 | ​ |  | — | ​ |  | (1) | ​ |  | 98 | ​ |  | 98
Total investment securities - available for sale | ​ | ​ | 2,014 | ​ | ​ | 1 | ​ | ​ | (19) | ​ | ​ | 1,996 | ​ | ​ | 1,996
Total investment securities | ​ | $ | 143,706 | ​ | $ | 64 | ​ | $ | (15,337) | ​ | $ | 128,433 | ​ | $ | 143,688
​ (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, 2023 | ​ | Cost | ​ | Gains | ​ | (Losses) | ​ | Value | ​ | Value
(In Thousands) |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Held to maturity |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
U.S. government sponsored enterprise MBS | ​ | $ | 149,803 | ​ | $ | — | ​ | $ | (18,459) | ​ | $ | 131,344 | ​ | $ | 149,803
U.S. government sponsored enterprise CMO | ​ | ​ | 3,883 | ​ | ​ | — | ​ | ​ | (336) | ​ | ​ | 3,547 | ​ | ​ | 3,883
U.S. SBA securities | ​ |  | 651 | ​ |  | — | ​ |  | (1) | ​ |  | 650 | ​ |  | 651
Total investment securities - held to maturity | ​ | ​ | 154,337 | ​ | ​ | — | ​ | ​ | (18,796) | ​ | ​ | 135,541 | ​ | ​ | 154,337
​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Available for sale | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
U.S. government agency MBS | ​ | ​ | 1,417 | ​ | ​ | — | ​ | ​ | (47) | ​ | ​ | 1,370 | ​ | ​ | 1,370
U.S. government sponsored enterprise MBS | ​ |  | 697 | ​ |  | — | ​ |  | (14) | ​ |  | 683 | ​ |  | 683
Private issue CMO | ​ |  | 103 | ​ |  | — | ​ |  | (1) | ​ |  | 102 | ​ |  | 102
Total investment securities - available for sale | ​ | ​ | 2,217 | ​ | ​ | — | ​ | ​ | (62) | ​ | ​ | 2,155 | ​ | ​ | 2,155
Total investment securities | ​ | $ | 156,554 | ​ | $ | — | ​ | $ | (18,858) | ​ | $ | 137,696 | ​ | $ | 156,492
​ In the second quarters of fiscal 2024 and 2023, the Corporation received MBS principal payments of $5.9 million and $7.6 million, respectively, and there were no purchases or sales of investment securities during these periods. ​ For the first six months of fiscal 2024 and 2023, the Corporation received MBS principal payments of $12.6 million and $16.9 million, respectively, and there were no purchases or sales of investment securities during these periods. ​ The Corporation held investments with an unrealized loss position of $15.3 million at December 31, 2023 and $18.9 million at June 30, 2023 as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2023 | ​ | 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 | ​ | $ | — | ​ | $ | — | ​ | $ | 117,410 | ​ | $ | 15,061 | ​ | $ | 117,410 | ​ | $ | 15,061
U.S. government sponsored enterprise CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,601 | ​ | ​ | 256 | ​ | ​ | 3,601 | ​ | ​ | 256
U.S. SBA securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 629 | ​ | ​ | 1 | ​ | ​ | 629 | ​ | ​ | 1
Total investment securities - held to maturity | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 121,640 | ​ | ​ | 15,318 | ​ | ​ | 121,640 | ​ | ​ | 15,318
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S government agency MBS | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,216 | ​ | ​ | 14 | ​ | ​ | 1,216 | ​ | ​ | 14
U.S. government sponsored enterprise MBS | ​ | ​ | 61 | ​ | ​ | 1 | ​ | ​ | 444 | ​ | ​ | 3 | ​ | ​ | 505 | ​ | ​ | 4
Private issue CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 98 | ​ | ​ | 1 | ​ | ​ | 98 | ​ | ​ | 1
Total investment securities - available for sale | ​ | ​ | 61 | ​ | ​ | 1 | ​ | ​ | 1,758 | ​ | ​ | 18 | ​ | ​ | 1,819 | ​ | ​ | 19
Total investment securities | ​ | $ | 61 | ​ | $ | 1 | ​ | ​ | 123,398 | ​ | $ | 15,336 | ​ | $ | 123,459 | ​ | $ | 15,337
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of June 30, 2023 | ​ | 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 | ​ | $ | 10,839 | ​ | $ | 253 | ​ | $ | 120,506 | ​ | $ | 18,206 | ​ | $ | 131,345 | ​ | $ | 18,459
U.S. government sponsored enterprise CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,547 | ​ | ​ | 336 | ​ | ​ | 3,547 | ​ | ​ | 336
U.S. SBA securities | ​ | ​ | 650 | ​ | ​ | 1 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 650 | ​ | ​ | 1
Total investment securities - held to maturity | ​ | ​ | 11,489 | ​ | ​ | 254 | ​ | ​ | 124,053 | ​ | ​ | 18,542 | ​ | ​ | 135,542 | ​ | ​ | 18,796
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available for sale | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S government agency MBS | ​ | ​ | 696 | ​ | ​ | 20 | ​ | ​ | 673 | ​ | ​ | 27 | ​ | ​ | 1,369 | ​ | ​ | 47
U.S. government sponsored enterprise MBS | ​ | ​ | 87 | ​ | ​ | 2 | ​ | ​ | 558 | ​ | ​ | 12 | ​ | ​ | 645 | ​ | ​ | 14
Private issue CMO | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 102 | ​ | ​ | 1 | ​ | ​ | 102 | ​ | ​ | 1
Total investment securities - available for sale | ​ | ​ | 783 | ​ | ​ | 22 | ​ | ​ | 1,333 | ​ | ​ | 40 | ​ | ​ | 2,116 | ​ | ​ | 62
Total investment securities | ​ | $ | 12,272 | ​ | $ | 276 | ​ | $ | 125,386 | ​ | $ | 18,582 | ​ | $ | 137,658 | ​ | $ | 18,858
​ The Corporation adopted ASC 326 on July 1, 2023. The Corporation evaluates individual investment securities quarterly for impairment. At December 31, 2023, predominately all of the $15.3 million of unrealized holding losses were in a loss position for 12 months or more; while at June 30, 2023, $18.6 million of the $18.9 million of unrealized holding losses were in a loss position for 12 months or more. The unrealized losses on investment securities were attributable to changes in interest rates relative to when the investment securities were purchased and not due to the credit quality of the investment securities, which are predominately U.S. government sponsored enterprise (GSE) securities that are either explicitly or implicitly guaranteed by the U.S. government and have a long history of no credit losses. Therefore, the Corporation has determined that the unrealized losses are due to the fluctuating nature of interest rates, and not related to credit risks. As a part of the Corporation’s monthly risk assessment, the Corporation runs a number of stressed liquidity scenarios. These liquidity scenarios support the Corporation’s assessment that the Corporation has the ability to hold these securities until maturity and does not need to liquidate these investment securities in order to maintain adequate liquidity. As a result, no ACL on investment securities was recorded at adoption and at December 31, 2023. ​ In order to maintain adequate liquidity, the Bank has established borrowing facilities with various counterparties. The Bank had a remaining borrowing capacity of $266.5 million as of December 31, 2023 at the FHLB of San Francisco. In addition, the Bank has secured an estimated $183.0 million discount window facility at the FRB of San Francisco collateralized by investment securities with total balance of $137.8 million and loans with total balance of $107.0 million as of December 31, 2023. As of December 31, 2023, the Bank also has a borrowing arrangement in the form of a federal funds facility with its correspondent bank for $50.0 million. The Bank had no advances under the Federal Reserve discount window or correspondent bank facility as of December 31, 2023. The total available borrowing capacity across all sources totaled approximately $499.5 million at December 31, 2023. ​ At June 30, 2023, the Bank had a remaining borrowing capacity of $287.9 million at the FHLB of San Francisco. In addition, the Bank had secured an estimated $139.0 million discount window facility at the FRB of San Francisco collateralized by investment securities with a June 30, 2023 total balance of $150.3 million. As of June 30, 2023, the Bank also had a borrowing arrangement in the form of a federal funds facility with its correspondent bank for $50.0 million. The Bank had no advances under the Federal Reserve discount window or correspondent bank facility as of June 30, 2023. The total available borrowing capacity across all sources totaled approximately $476.9 million at June 30, 2023. ​ At December 31, 2023 and 2022, the Corporation did not hold any investment securities with the intent to sell and determined it had the ability to hold these investment securities until maturity. It also determined that it was more likely than not that the Corporation would not be required to sell the securities prior to recovery of the amortized cost basis; therefore, no impairment losses were recorded for the quarters and six months ended December 31, 2023 and 2022. ​ Contractual maturities of investment securities as of December 31, 2023 and June 30, 2023 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023 | ​ | June 30, 2023
​ |  | ​ | ​ |  | Estimated |  | ​ | ​ |  | Estimated
​ | ​ | Amortized | ​ | Fair | ​ | Amortized | ​ | Fair
(In Thousands) | ​ | Cost | ​ | Value | ​ | Cost | ​ | Value
Held to maturity |  | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Due in one year or less | ​ | $ | 21 | ​ | $ | 21 | ​ | $ | 303 | ​ | $ | 300
Due after one through five years | ​ |  | 6,061 | ​ |  | 5,868 | ​ |  | 7,686 | ​ |  | 7,365
Due after five through ten years | ​ |  | 54,946 | ​ |  | 50,341 | ​ |  | 61,043 | ​ |  | 54,686
Due after ten years | ​ |  | 80,664 | ​ |  | 70,207 | ​ |  | 85,305 | ​ |  | 73,190
Total investment securities - held to maturity | ​ | ​ | 141,692 | ​ | ​ | 126,437 | ​ | ​ | 154,337 | ​ | ​ | 135,541
​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Available for sale | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Due in one year or less | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Due after one through five years | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | —
Due after five through ten years | ​ |  | 626 | ​ |  | 621 | ​ |  | 590 | ​ |  | 580
Due after ten years | ​ |  | 1,388 | ​ |  | 1,375 | ​ |  | 1,627 | ​ |  | 1,575
Total investment securities - available for sale | ​ | ​ | 2,014 | ​ | ​ | 1,996 | ​ | ​ | 2,217 | ​ | ​ | 2,155
Total investment securities | ​ | $ | 143,706 | ​ | $ | 128,433 | ​ | $ | 156,554 | ​ | $ | 137,696
​

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