Stockholders' equity - Schedule of RSU and PSU Activity (Details) - $ / shares	1 Months Ended		3 Months Ended			12 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Sep. 30, 2025	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
RSUs Outstanding
Outstanding
Unvested beginning balance (in shares)						14,892,768
Granted (in shares)						10,869,235
Released (in shares)						(7,225,908)
Canceled (in shares)						(4,376,936)
Unvested ending balance (in shares)						14,159,159	14,892,768
Unvested (in shares)						14,069,826
Awards vested, not yet released (in shares)						89,333
Weighted Average Grant Date Fair Value
Unvested beginning balance (in dollars per share)						$ 10.74
Granted (in dollars per share)						6.88	$ 9.25	$ 9.86
Released (in dollars per share)						10.74
Canceled (in dollars per share)						9.83
Unvested ending balance (in dollars per share)						8.06	$ 10.74
Unvested (in dollars per share)						8.06
Awards vested, not yet released (in dollars per share)						$ 8.39
Performance-Based Awards
Outstanding
Unvested beginning balance (in shares)						673,578
Granted (in shares)	218,565	450,170	553,125	553,568	645,833	925,169
Released (in shares)						(169,073)
Canceled (in shares)						(518,673)
Unvested ending balance (in shares)						911,001	673,578
Unvested (in shares)						911,001
Awards vested, not yet released (in shares)						0
Weighted Average Grant Date Fair Value
Unvested beginning balance (in dollars per share)						$ 10.40
Granted (in dollars per share)						7.37	$ 10.98	$ 8.89
Released (in dollars per share)						9.99
Canceled (in dollars per share)						10.13
Unvested ending balance (in dollars per share)						7.55	$ 10.40
Unvested (in dollars per share)						7.55
Awards vested, not yet released (in dollars per share)						$ 0