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Note 5 - Investment in Equity-method Investee - Summary of Equity-method Investee (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net margin	$ 229,831	$ 144,735
Net income	44,755	44,027
Net income attributable to our equity investment investee	$ (0)	19
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Net margin		55
Net income		$ 29

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- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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