Revenue, Deferred Revenue and Remaining Performance Obligations - Deferred Contract Acquisition Costs (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2020 |
Jan. 31, 2019 |
Feb. 01, 2019 |
|
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||
| Capitalized contract cost, net, beginning balance | $ 38,765 | $ 22,334 | |
| Capitalization of contract acquisition costs | 86,594 | 45,073 | |
| Amortization of deferred contract acquisition costs | (35,459) | (28,642) | |
| Capitalized contract cost, net, ending balance | 114,206 | 38,765 | |
| Deferred contract acquisition costs, current | 42,971 | 28,847 | $ 22,816 |
| Deferred contract acquisition costs, noncurrent | 71,235 | 9,918 | $ 40,255 |
| ASC 2014-09 | |||
| Revenue, Initial Application Period Cumulative Effect Transition [Line Items] | |||
| Adjustment due to adoption of ASU 606 | $ 24,306 | $ 0 | |