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Summary of Significant Accounting Policies - Accounts Receivable and Allowance for Doubtful Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]      
Balance, beginning of year $ 1,215 $ 843 $ 5,300
Charges 45 823 649
Write-offs (147) (619) (4,702)
Other (82) 168 (404)
Balance, end of year $ 1,031 $ 1,215 $ 843