Revenue - Schedule of Allowance for Doubtful Accounts (Details) $ in Thousands	6 Months Ended
	Jul. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 2,515
Provision	2,635
Recoveries/write-offs	(832)
Ending balance	4,368
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Ending balance	$ 50