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Securities - Association's Investments Gross Unrealized Investment Losses and Fair Value of Association's Investments with Unrealized Losses (Detail) - USD ($) $ in Thousands | Mar. 31, 2025 | Jun. 30, 2024
--- | --- | ---
Less than 12 Months, Fair Value | $ 13,060 | $ 1,988
Less than 12 Months, Unrealized Losses | (185) | (5)
12 Months or More, Fair Value | 167,155 | 183,664
12 Months or More, Unrealized Losses | (24,637) | (29,084)
Total, Fair Value | 180,215 | 185,652
Total, Unrealized Losses | (24,822) | (29,089)
U.S. Treasury [Member] |  |
Less than 12 Months, Fair Value |  | 0
Less than 12 Months, Unrealized Losses |  | 0
12 Months or More, Fair Value |  | 444
12 Months or More, Unrealized Losses |  | (53)
Total, Fair Value |  | 444
Total, Unrealized Losses |  | (53)
U.S. Government and Federal Agency [Member] |  |
Less than 12 Months, Fair Value | 0 | 0
Less than 12 Months, Unrealized Losses | 0 | 0
12 Months or More, Fair Value | 1,786 | 6,609
12 Months or More, Unrealized Losses | (198) | (370)
Total, Fair Value | 1,786 | 6,609
Total, Unrealized Losses | (198) | (370)
Mortgage-backed: GSE residential [Member] |  |
Less than 12 Months, Fair Value | 10,795 | 945
Less than 12 Months, Unrealized Losses | (173) | (1)
12 Months or More, Fair Value | 153,314 | 162,525
12 Months or More, Unrealized Losses | (22,566) | (26,360)
Total, Fair Value | 164,109 | 163,470
Total, Unrealized Losses | (22,739) | (26,361)
Small Business Administration [Member] |  |
Less than 12 Months, Fair Value | 1,237 | 0
Less than 12 Months, Unrealized Losses | (11) | 0
12 Months or More, Fair Value | 12,055 | 14,086
12 Months or More, Unrealized Losses | (1,873) | (2,301)
Total, Fair Value | 13,292 | 14,086
Total, Unrealized Losses | (1,884) | (2,301)
State and political subdivisions [Member] |  |
Less than 12 Months, Fair Value | 1,028 | 1,043
Less than 12 Months, Unrealized Losses | (1) | (4)
12 Months or More, Fair Value | 0 | 0
12 Months or More, Unrealized Losses | 0 | 0
Total, Fair Value | 1,028 | 1,043
Total, Unrealized Losses | $ (1) | $ (4)

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