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Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Income Tax Disclosure [Abstract]
Provision for (benefits from) income taxes	$ (633)	$ (46)	$ (459)	$ 873
StellaService and Sense360 acquisitions
Operating Loss Carryforwards [Line Items]
Change in deferred tax assets valuation	$ 600
United Kingdom
Operating Loss Carryforwards [Line Items]
Excess tax benefits from stock based compensation			$ 1,300