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Line of Credit and Long-Term Debt - Components of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Long-term debt consists of:    
Less: current maturities of long-term debt $ (4,251) $ (4,182)
Less: deferred loan costs (206) (239)
Long-term debt, less current portion 53,672 57,476
Notes payable    
Long-term debt consists of:    
Total short-term and long-term debt $ 58,129 $ 61,897