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Note 16 - Employee Benefit Plans - Fair Values of Pension Plans (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
--- | --- | ---
Fair value of pension plan assets | $ 164,545 | $ 164,364
Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 2,792 | 1,558
Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 161,753 | 162,806
Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets | 0 | 0
Cash and Cash Equivalents [Member] |  |
Fair value of pension plan assets | 2,792 | 1,558
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 2,792 | 1,558
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 0 | 0
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets | 0 | 0
Equity Securities [Member] |  |
Fair value of pension plan assets | 53,111 | 54,308
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 0 | 0
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 53,111 | 54,308
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets | 0 | 0
Corporate Bonds and Other Fixed Income Securities [Member] |  |
Fair value of pension plan assets | 96,522 | 97,215
Corporate Bonds and Other Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 0 | 0
Corporate Bonds and Other Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 96,522 | 97,215
Corporate Bonds and Other Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets | 0 | 0
Other Debt Obligations [Member] |  |
Fair value of pension plan assets | 12,120 | 11,283
Other Debt Obligations [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 0 | 0
Other Debt Obligations [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 12,120 | 11,283
Other Debt Obligations [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets | $ 0 | $ 0

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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/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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