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Note 9 - Fair Value Measurement - Details of Fair Value Adjustment (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Total fair value adjustments, net | $ 5,965 | $ (1,875)
Fair Value, Inputs, Level 1 [Member] |  |
Unrealized gain (loss) on investments in equity securities | 6,100 | (3,506)
Derivative [Member] | Fair Value, Inputs, Level 2 [Member] |  |
fair value gain(loss) | (201) | 473
Securities Investment [Member] | Fair Value, Inputs, Level 1 [Member] |  |
fair value gain(loss) | $ 66 | $ 1,158

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- Definition Amount of unrealized gain (loss) recognized in income from asset (liability) measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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