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Long-Term Debt, Interest Rate Swap and Finance Lease Obligations - Scheduled Payments of Finance Lease Obligations (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Lessee, Lease, Description [Line Items]    
2021 $ 282  
2022 209  
2023 62  
2024 20  
Total lease payments 573  
Less: Interest (42)  
Principal payments on finance lease obligation 531  
Equipment    
Lessee, Lease, Description [Line Items]    
2021 282  
2022 209  
2023 62  
2024 20  
Total lease payments 573  
Less: Interest (42)  
Principal payments on finance lease obligation $ 531 $ 857