Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Additional Information (Detail)

v3.21.2
Fair Value Measurement - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2021
USD ($)
$ / shares
shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Exercise price of warrants or rights | $ / shares $ 11.50
EIB warrants [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Number of days used for volume weighted average valuation method using the SPIR publicly traded price 20 days
Number of warrants or rights outstanding. | shares 1,551,933
Warrant redemption price per share | $ / shares $ 0.0001
Series C Preferred Stock [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Issuance of common stock upon exercise of warrants shares | shares 146,919
Exercise of series C preferred warrants | $ $ 891
Silicon Valley Bank [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Class of warrants or right issued during period | shares 32,412
Exercise price of warrants or rights | $ / shares $ 1.60
Conversion of Silicon Valley Bank warrants to common stock | $ $ 308