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Note 7 - Long-term Debt - Annual Maturities on Long-term Debt Outstanding (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
2020 $ 67,637  
2021 41,629  
2022 55,460  
2023 47,211  
2024 26,157  
2025 2,955  
2026 775  
Total $ 241,824 $ 221,223