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Note 7 - Marketable Securities - Net Gain (Loss) of Investment (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Loss on marketable securities, net | $ (27,686) | $ (10,144)
Loss on marketable securities, net | (27,686) | (10,144)
Less: Net loss recognized related to marketable securities sold | 27,695 | 10,418
Unrealized gain related to marketable securities still held | 9 | 274
Other Income, Net and Special Dividend Income [Member] |  |
Dividend income (included in Other income, net and Special dividend income) | $ 1,705 | $ 197,575

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- Definition Amount of dividend income on nonoperating securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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- Definition Amount of realized gain (loss) on investment in marketable security. + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) on investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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