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Note 6 - Leases - Weighted Average Remaining Lease Term and Discount Rate (Details) | Dec. 31, 2021 | Dec. 31, 2020
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Operating leases (Year) | 1 year 9 months 18 days | 2 years 1 month 6 days
Finance leases (Year) | 2 years 3 months 18 days | 3 years 3 months 18 days
Operating leases | 3.25% | 3.25%
Finance leases | 3.25% | 3.25%

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