Income Taxes - Schedule of the Differences Between the Statutory Tax Rate and the Company's Effective Tax Rate (Detail) |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
Mar. 31, 2019 |
|
| Effective Income Tax Rate Reconciliation, Percent [Abstract] | |||
| Statutory federal tax expense rate | 21.00% | 21.00% | 21.00% |
| State taxes, net of federal benefit | 0.00% | 0.00% | 0.00% |
| Non-deductible stock-based compensation | (7.00%) | (2.00%) | (2.00%) |
| Change in valuation allowance | (14.00%) | (19.00%) | (19.00%) |
| Other | 0.00% | 0.00% | 0.00% |
| Effective tax rate | 0.00% | 0.00% | 0.00% |