Quarterly report pursuant to Section 13 or 15(d)

Share-based compensation - Underwriters Warrants (Details)

v3.21.2
Share-based compensation - Underwriters Warrants (Details) - USD ($)
Jun. 30, 2021
Dec. 16, 2020
Share-based compensation    
Warrants to purchase shares 172,500 172,500
Warrants exercise price $ 12.50 $ 12.50
Remaining contractual term 4 years 5 months 19 days  
Aggregate intrinsic value of the warrants outstanding $ 0