Net Income Per Share - Schedule of Potential Shares of Common Stock Excluded from Computation of Diluted Net Income (Loss) Per Share (Details) - shares	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,950,029	9,414,520	11,022,812
Class A | Outstanding stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	86,576	95,963	109,441
Class A | Unvested RSUs
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	1,550,584	8,082,027	9,124,205
Class A | Purchase rights committed under the ESPP
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	312,869	1,236,530	1,789,166
Class A | Shares reserved for transfer to nonprofit organizations
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	164,192	164,192	164,192
Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	0	0
Class B | Outstanding stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	0	0
Class B | Unvested RSUs
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	0	0
Class B | Purchase rights committed under the ESPP
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	0	0	0