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Subsequent events (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Apr. 28, 2021
Oct. 13, 2020
Apr. 30, 2021
Mar. 31, 2021
Subsequent Event [Line Items]        
Proceeds from Issuance of Common Stock   $ 41,700   $ 105
Maximum        
Subsequent Event [Line Items]        
Term of warrant 3 years      
Private offering        
Subsequent Event [Line Items]        
Proceeds from Issuance of Common Stock     $ 27,000  
Subsequent event | Series B Warrants        
Subsequent Event [Line Items]        
Warrants issued to purchase common stock 500,000      
Exercise price $ 45.00      
Subsequent event | Private offering        
Subsequent Event [Line Items]        
Stock Issued 1,000,000      
Share price (Dollar per share) $ 27.00      
Proceeds from Issuance of Common Stock $ 27,000