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Long-Term Debt - Maturities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Maturities - Topic 842    
2021 $ 137 $ 331
2022 393 316
2023 246 169
2024 188 112
2025+ 90  
Total principal and interest payments 1,054 928
Less amount representing interest (97) (83)
Present value of net minimum lease payments 957 845
Less current portion (378) (301)
Long-term principle payments $ 579 $ 544