Note 6 - Investments - Loss on Change in Fair Value of Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net gains recognized on equity investments sold during the period	$ 0	$ 1,505	$ 13	$ 1,505
Change in unrealized losses on equity investments held at end of the period	(39)	(328)	(248)	(436)
(Loss) gain on change in fair value of equity investments	$ (39)	$ 1,177	$ (235)	$ 1,069

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

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-Publisher FASB
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Amount, after tax and adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

+ References

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