Acquisition of SpringCM Inc. - Pro Forma Results (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019
Business Acquisition, Pro Forma Information [Abstract]
Revenue	$ 720,321	$ 544,680
Net loss	$ (459,895)	$ (69,078)
Net loss per share attributable to common stockholders, basic and diluted (in usd per share)	$ (3.40)	$ (2.18)