Summary of Significant Accounting Policies - Schedule of Changes in Company's Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Jan. 31, 2019 |
Jan. 31, 2018 |
Jan. 31, 2017 |
|
Allowance for Doubtful Accounts Receivable [Roll Forward] | |||
Beginning balance | $ 2,919 | $ 1,580 | $ 771 |
Additions | 5,033 | 5,003 | 3,519 |
Write-offs | (4,565) | (3,664) | (2,710) |
Ending balance | $ 3,387 | $ 2,919 | $ 1,580 |