Segment Information - Schedule of Financial Information by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 210,460	$ 187,468
Total segment contribution margin	167,277	137,224
Subscription
Segment Reporting Information [Line Items]
Total revenue	187,085	154,838
Total segment contribution margin	165,520	132,230
Services
Segment Reporting Information [Line Items]
Total revenue	23,375	32,630
Total segment contribution margin	$ 1,757	$ 4,994