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Debt - Net Carrying Amount of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Debt    
Unamortized deferred finance costs related to term loan $ (127) $ (179)
Total 17,373 18,821
Current portion of long-term debt 2,850 2,250
Long-term debt 14,523 16,571
Xcel Term Loan    
Debt    
Term Loan $ 17,500 $ 19,000