Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2021 |
Jan. 31, 2020 |
Jan. 31, 2019 |
|
| Channel partner A | Customer Concentration Risk | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage | 6.00% | 11.00% | |
| Channel partner A | Distributor Concentration Risk | Revenue Benchmark | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage | 8.00% | 10.00% | 15.00% |
| Channel partner B | Customer Concentration Risk | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage | 4.00% | 10.00% | |
| Channel Partner C | Customer Concentration Risk | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage | 10.00% | 3.00% | |
| Customer A | Customer Concentration Risk | Accounts Receivable | |||
| Concentration Risk [Line Items] | |||
| Concentration risk, percentage | 17.00% | 17.00% | |