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Note H - Employee Benefit Plans - Fair Values by Asset Category of Defined Benefit Pension Plan (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2021
--- | --- | --- | ---
Fair value by asset category |  | $ 1,025 | $ 1,094 | $ 1,429
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category |  | 1,025 |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category |  | 0 |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category |  | 0 |  |
Equity Securities [Member] |  |  |  |
Fair value by asset category | [1] | 653 |  |
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [1] | 653 |  |
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category | [1] | 0 |  |
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category | [1] | 0 |  |
Debt Securities [Member] |  |  |  |
Fair value by asset category | [2] | 141 |  |
Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [2] | 141 |  |
Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category | [2] | 0 |  |
Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category | [2] | 0 |  |
Other Contract [Member] |  |  |  |
Fair value by asset category | [3] | 231 |  |
Other Contract [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [3] | 231 |  |
Other Contract [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Fair value by asset category | [3] | 0 |  |
Other Contract [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Fair value by asset category | [3] | $ 0 |  |
[1] | This category is comprised of publicly traded funds, of which 50% are large-cap funds, 26% are developed and emerging market funds, 18% are mid-cap funds, and 6% are small-cap funds.
[2] | This category is comprised of publicly traded funds, of which 34% are U.S. fixed income funds and 66% are corporate and foreign market fixed income funds.
[3] | This category is comprised of commodities and cash alternatives.

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