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Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Prepaid Expenses And Other Current Assets    
Advances to suppliers $ 247 $ 374
Prepaid insurance 1,763 709
IVA taxes receivable, net 665 846
Other current assets 324 647
Total $ 2,999 $ 2,576