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Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 31, 2022	Oct. 31, 2021	Jul. 31, 2021	Apr. 30, 2021	Jan. 31, 2021	Oct. 31, 2020	Jul. 31, 2020	Apr. 30, 2020	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 100,932	$ 99,529	$ 98,124	$ 91,992	$ 92,194	$ 89,061	$ 88,055	$ 85,351	$ 390,577	$ 354,661	$ 298,829
Gross profit	76,357	74,274	71,509	70,138	70,597	67,422	66,071	64,167	292,278	268,257	221,799
Loss from operations	(21,961)	(24,354)	(26,412)	(17,232)	(19,143)	(21,760)	(24,240)	(29,189)	(89,959)	(94,332)	(122,953)
Net loss	$ (23,110)	$ (24,926)	$ (27,592)	$ (17,631)	$ (18,311)	$ (22,041)	$ (25,116)	$ (29,224)	$ (93,259)	$ (94,692)	$ (121,544)
Net loss per share attributable to common stockholders, basic and diluted (in dollars per share)	$ (0.18)	$ (0.19)	$ (0.22)	$ (0.14)	$ (0.15)	$ (0.18)	$ (0.21)	$ (0.25)	$ (0.73)	$ (0.79)	$ (1.09)

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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