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Inventory Financing Agreements (Details) - Supply And Offtake Agreements - USD ($)
$ in Thousands
Mar. 31, 2020
Jan. 17, 2020
Purchase Commitment, Excluding Long-term Commitment [Line Items]    
Obligation to purchase inventory $ 2,271 $ 12,100
Inventory held at assemblers 8,471  
Purchase commitment $ 2,300