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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, 2022 | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | --- | ---
Fair value by asset category |  | $ 1,094 | $ 1,429 | $ 1,339
Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category |  | 1,094 |  |
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] | 590 |  |
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [1] | 590 |  |
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] | 217 |  |
Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [2] | 217 |  |
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] | 287 |  |
Other Contract [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair value by asset category | [3] | 287 |  |
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 52% are large-cap funds, 24% are developed market funds, 19% are mid-cap funds, and 5% are small-cap funds.
[2] | This category is comprised of publicly traded funds, of which 42% are U.S. fixed income funds and 58% are corporate and foreign market fixed income funds.
[3] | This category is comprised of commodities and cash alternatives.

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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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