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Note 18 - Redeemable Noncontrolling Interests (Details Textual) - Beijing Tongmei Xtal Technology [Member] - USD ($) $ in Millions |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jan. 25, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Jun. 30, 2025 | Dec. 31, 2020
Capital Received From Private Equity Funds |  | $ 1.5 | $ 48.1 |  | $ 48.1
Redeemable Non Controlling Interests, Ownership Percentage |  |  | 7.06% |  |
Capital Received, Approved | $ 49.0 |  |  |  |
Percentage of Equity Issued on Conversion of Non Controlling Interests | 7.28% |  |  | 14.50% | 7.59%
Redeemable Noncontrolling Interest, Equity, Redemption Value |  |  |  | $ 49.0 |

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- Definition Represents the amount of capital received from private equity funds during the period. + References No definition available. + Details
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- Definition Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479887/480-10-S45-3 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3A -Subparagraph (24) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3A -Subparagraph (24)(b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A + Details
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