XML 84 R65.htm IDEA: XBRL DOCUMENT v3.21.1
Income taxes - Reconciliation of the U.S federal statutory income tax rate (Details)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Reconciliation of the U.S federal statutory income tax rate    
U.S. Federal statutory income tax rate (21.00%) (21.00%)
State taxes, net of federal benefit (2.40%) (1.60%)
Research and development credits (0.80%) 0.00%
Research and development expenses 1.90% 2.20%
Return to provision 0.00% 1.90%
Stock compensation (3.90%) 0.00%
Foreign tax rate differential 0.00% 2.80%
Change in valuation allowance 25.90% 16.00%
Other 0.30% (0.30%)
Effective income tax rate 0.00% 0.00%