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Debt and Credit Facilities - Debt summary (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Apr. 19, 2022
Debt      
Long-term debt, gross $ 106,413 $ 101,437  
Unamortized debt discounts and issuance costs (7,320) (8,386)  
Long-term debt, net 99,093 93,051  
OFA      
Debt      
Maximum borrowing capacity     $ 260,000
Credit Facility      
Debt      
Maximum borrowing capacity     135,000
Credit Agreement and Guaranty      
Debt      
Accrued interest 2,022 807  
Long-term debt, gross 70,000 70,000  
Revenue Interest Financing Agreement      
Debt      
Revenue Interest Financing Agreement 30,000 30,000  
Accrued interest 5,021 2,041  
Payments (80) (10)  
Long-term debt, gross 34,941 32,031  
Long-term debt liability 34,391 30,630  
Debt classified as current $ (550) $ (1,401)  
Maximum borrowing capacity     $ 120,000