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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 | Dec. 31, 2022 | Jun. 30, 2022
--- | --- | ---
Less than 12 Months, Fair Value | $ 94,938 | $ 169,518
Less than 12 Months, Unrealized Losses | (6,720) | (16,877)
12 Months or More, Fair Value | 102,871 | 39,615
12 Months or More, Unrealized Losses | (22,692) | (7,323)
Total Fair Value | 197,809 | 209,133
Total, Unrealized Losses | (29,412) | (24,200)
US Treasury [Member] |  |
Less than 12 Months, Fair Value | 1,485 | 3,400
Less than 12 Months, Unrealized Losses | (15) | (83)
12 Months or More, Fair Value | 437 | 0
12 Months or More, Unrealized Losses | (59) | 0
Total Fair Value | 1,922 | 3,400
Total, Unrealized Losses | (74) | (83)
U.S. Government and Federal Agency [Member] |  |
Less than 12 Months, Fair Value | 2,861 | 9,121
Less than 12 Months, Unrealized Losses | (129) | (367)
12 Months or More, Fair Value | 3,618 | 0
12 Months or More, Unrealized Losses | (367) | 0
Total Fair Value | 6,479 | 9,121
Total, Unrealized Losses | (496) | (367)
Mortgage-backed Securities - GSE Residential [Member] |  |
Less than 12 Months, Fair Value | 82,025 | 144,042
Less than 12 Months, Unrealized Losses | (5,982) | (15,267)
12 Months or More, Fair Value | 91,207 | 37,587
12 Months or More, Unrealized Losses | (20,670) | (6,962)
Total Fair Value | 173,232 | 181,629
Total, Unrealized Losses | (26,652) | (22,229)
Small Business Administration [Member] |  |
Less than 12 Months, Fair Value | 8,567 | 12,955
Less than 12 Months, Unrealized Losses | (594) | (1,160)
12 Months or More, Fair Value | 7,609 | 2,028
12 Months or More, Unrealized Losses | (1,596) | (361)
Total Fair Value | 16,176 | 14,983
Total, Unrealized Losses | $ (2,190) | $ (1,521)

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