Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Payables and Accruals [Abstract]
Accrued commissions	$ 1,763	$ 2,633
Accrued bonus	3,073	2,848
Accrued vacation	4,187	3,110
Payroll tax payable	6,623	1,971
Accrued other compensation and benefits	2,357	4,762
Total accrued compensation and benefits	18,003	15,324
Accrued fees payable to salesforce.com	5,654	5,242
Accrued third-party professional services subcontractors' fees	966	1,619
Taxes payable	3,413	2,805
Other accrued expenses	5,269	6,479
Total accrued expenses and other current liabilities	$ 15,302	$ 16,145