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Note 3 - Long-term Debt Financing - Long-term Debt Maturities (Details)
Sep. 30, 2021
USD ($)
2021 (excluding the nine-months ended September 30, 2021) $ 242,000
2022 1,344,000
2023 1,719,000
2024 2,094,000
2025 2,469,000
Thereafter 8,259,000
Long-term Debt, Gross $ 16,127,000