Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Stock Option Awards - Grant Volatility (Details)

v3.21.2
Shareholders' Equity - Stock Option Awards - Grant Volatility (Details) - Stock Options [Member]
6 Months Ended
Jul. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility rate 89.00%
Expected term (in years) 6 years
Risk-free interest rate 1.05%