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Long-term debt (Details) - USD ($)
$ in Thousands
1 Months Ended
Apr. 30, 2020
Dec. 31, 2020
Future debt principal payments    
2021   $ 366
2022   134
Total   500
Less current portion of long-term debt   (366)
Long-term debt, net of current portion   $ 134
Paycheck Protection Program    
Debt Instrument [Line Items]    
Debt amount $ 500  
Debt term (in Years) 2 years  
Interest rate 1.00%  
Payments deferred period 6 months