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Debt - Xcel Term Loan Fixed Installments (Details) - Xcel Term Loan
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Debt  
Repayment of loan as a percentage of Excess cash flow 50.00%
Minimum principal payment $ 4,450
May 1, 2021, June 30, 2021, September 30, 2021, and December 31, 2021 | Secured Debt  
Debt  
Quarterly installment payments on term loans 700
March 31, 2022, June 30, 2022, September 30, 2022, and December 31, 2022 | Secured Debt  
Debt  
Quarterly installment payments on term loans 1,125
March 31, 2023, June 30, 2023, September 30, 2023, and December 31, 2023 | Secured Debt  
Debt  
Quarterly installment payments on term loans $ 1,250