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INVESTMENT SECURITIES - Estimated Fair Value and Gross Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | ---
Securities available for sale, Estimated Fair Value |  |
Less than 12 Months | $ 3,158 | $ 151,940
12 Months or Longer | 242,357 | 268,889
Total | 245,515 | 420,829
Securities held to maturity, Estimated Fair Value, New |  |
12 Months or Longer | 22,273 | 21,744
Total | 22,273 | 21,744
Securities available for sale, Unrealized Losses |  |
Less than 12 Months | (2) | (2,043)
12 Months or Longer | (6,040) | (16,827)
Total | (6,042) | (18,870)
Securities held to maturity, Unrealized Losses, New |  |
12 Months or Longer | (1,519) | (2,205)
Total | (1,519) | (2,205)
Unrealized losses | 6,042 | 18,870
U.S. Government and agency obligations |  |
Securities available for sale, Estimated Fair Value |  |
Less than 12 Months |  | 104,145
12 Months or Longer | 242,249 | 268,782
Total | 242,249 | 372,927
Securities available for sale, Unrealized Losses |  |
Less than 12 Months |  | (1,975)
12 Months or Longer | (5,971) | (16,762)
Total | (5,971) | (18,737)
Securities held to maturity, Unrealized Losses, New |  |
Unrealized losses | 5,971 | 18,737
Corporate debt securities |  |
Securities held to maturity, Estimated Fair Value, New |  |
12 Months or Longer | 18,566 | 17,951
Total | 18,566 | 17,951
Securities held to maturity, Unrealized Losses, New |  |
12 Months or Longer | (1,434) | (2,049)
Total | (1,434) | (2,049)
Municipal obligations |  |
Securities available for sale, Estimated Fair Value |  |
Less than 12 Months | 3,158 | 47,781
Total | 3,158 | 47,781
Securities held to maturity, Estimated Fair Value, New |  |
12 Months or Longer | 3,707 | 3,793
Total | 3,707 | 3,793
Securities available for sale, Unrealized Losses |  |
Less than 12 Months | (2) | (67)
Total | (2) | (67)
Securities held to maturity, Unrealized Losses, New |  |
12 Months or Longer | (85) | (156)
Total | (85) | (156)
Unrealized losses | 2 | 67
Other debt securities |  |
Securities available for sale, Estimated Fair Value |  |
Less than 12 Months |  | 14
12 Months or Longer | 108 | 107
Total | 108 | 121
Securities available for sale, Unrealized Losses |  |
Less than 12 Months |  | (1)
12 Months or Longer | (69) | (65)
Total | (69) | (66)
Securities held to maturity, Unrealized Losses, New |  |
Unrealized losses | $ 69 | $ 66

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