Stock-based compensation - Summary of RSU activity (Details)	12 Months Ended
	Dec. 31, 2025 $ / shares shares
Restricted stock units
Shares
Outstanding, beginning balance (in shares) | shares	98,000
Granted (in shares) | shares	0
Vested (in shares) | shares	0
Forfeited (in shares) | shares	(98,000)
Outstanding, ending balance (in shares) | shares	0
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 18.17
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	18.17
Outstanding, ending balance (in dollars per share) | $ / shares	$ 0
Time-Based Restricted Stock Units
Shares
Outstanding, beginning balance (in shares) | shares	1,505,289
Granted (in shares) | shares	1,954,500
Vested (in shares) | shares	(414,192)
Forfeited (in shares) | shares	(226,846)
Outstanding, ending balance (in shares) | shares	2,818,751
Weighted-Average Grant Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 6.61
Granted (in dollars per share) | $ / shares	3.18
Vested (in dollars per share) | $ / shares	6.48
Forfeited (in dollars per share) | $ / shares	4.59
Outstanding, ending balance (in dollars per share) | $ / shares	$ 4.41