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Note 1 - Significant Accounting Policies - Scheduled Maturity for the Company's Investments (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Maturing in one year or less | $ 46,827 | $ 22,054
Maturing after one year through two years | 3,002 | 0
Total investments | $ 49,829 | $ 22,054

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