Stockholders' equity - RSU and PSU Activity (Details) - $ / shares	9 Months Ended
	Sep. 30, 2025
RSUs Outstanding
Outstanding
Unvested beginning balance (in shares)	14,892,768
Granted (in shares)	9,750,922
Released (in shares)	(4,866,827)
Canceled (in shares)	(2,464,351)
Unvested ending balance (in shares)	17,312,512
Unvested (in shares)	17,227,452
Awards vested, not yet released (in shares)	85,060
Weighted Average Grant Date Fair Value
Unvested beginning balance (in dollars per share)	$ 10.74
Granted (in dollars per share)	7.03
Released (in dollars per share)	11.63
Canceled (in dollars per share)	10.47
Unvested ending balance (in dollars per share)	8.44
Unvested (in dollars per share)	8.44
Awards vested, not yet released (in dollars per share)	$ 8.54
Performance-Based Awards
Outstanding
Unvested beginning balance (in shares)	673,578
Granted (in shares)	925,169
Released (in shares)	(138,812)
Canceled (in shares)	(308,426)
Unvested ending balance (in shares)	1,151,509
Unvested (in shares)	1,151,509
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
Released (in dollars per share)	10.06
Canceled (in dollars per share)	10.89
Unvested ending balance (in dollars per share)	7.87
Unvested (in dollars per share)	7.87
Awards vested, not yet released (in dollars per share)	$ 0