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Note 18 - Stock-Based Compensation - Equity Compensation Expenses Related to Performance-based Shares (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2023
Stock-based compensation expense | $ 1,527 | $ 1,450 | $ 1,288
Performance Shares [Member] |  |  |
Stock-based compensation expense | 805 | 872 | 833
Performance Shares [Member] | Granted Within the Fiscal Year Ended June 30, 2021 [Member] |  |  |
Stock-based compensation expense | 0 | 384 | 317
Performance Shares [Member] | Granted Within the Fiscal Year Ended June 30, 2022 [Member] |  |  |
Stock-based compensation expense | 317 | 321 | 280
Performance Shares [Member] | Granted Within The Fiscal Year Ended June 30, 2023 [Member] |  |  |
Stock-based compensation expense | 196 | 167 | 0
Performance Shares [Member] | Granted Within The Fiscal Year Ended June 30, 2024 [Member] |  |  |
Stock-based compensation expense | $ 292 | $ 0 | $ 0

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479983/718-10-S45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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