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Fair value measurements (Tables)
12 Months Ended
Dec. 31, 2020
Fair value measurements  
Schedule of Reconciliation of change in Fair value of warrant liability

A reconciliation of the change in the fair value of the warrant liability for the year ended December 31, 2020 is as follows (in thousands).

Fair Value

Measurements

Using Significant

Unobservable

Inputs

    

(Level 3)

Balance, December 31, 2019

$

Issuance of warrants on June 2, 2020

1,522

Change in fair value of warrant liability

5,538

Reclass of warrant liability to additional paid-in capital upon IPO

(7,060)

Warrant liability, December 31, 2020

$