CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020
Statement Of Financial Position [Abstract]
Allowance for accounts receivable	$ 3,361	$ 3,221
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Class A Common Stock, par value	$ 0.0001	$ 0.0001
Class A Common Stock, shares authorized	1,000,000,000	1,000,000,000
Class A Common Stock, shares issued	158,643,000	150,611,000
Class A Common Stock, shares outstanding	158,643,000	150,611,000