Stock-based compensation - Restricted Stock Units and Performance Restricted Stock Units - (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Restricted stock disclosures
Stock-based compensation	$ 3,673	$ 3,573
RSUs
Shares
Granted (in shares)	940,311
Restricted stock disclosures
Vesting period	3 years
Stock-based compensation	$ 1,205	$ 1,090
Unrecognized stock-based compensation expense	$ 10,900
Remaining weighted-average remaining vesting period	2 years 2 months 12 days
PRSUs
Restricted stock disclosures
Unrecognized stock-based compensation expense	$ 3,300
Unvested RSUs and PRSUs
Shares
Balance, beginning (in shares)	1,649,943
Granted (in shares)	1,717,311
Vested (in shares)	(450,556)
Forfeited (in shares)	(67,420)
Balance, ending (in shares)	2,849,278
Weighted Average Grant Date Fair Value Per Share
Balance, beginning (in dollars per share)	$ 7.44
Granted (in dollars per share)	4.26
Vested (in dollars per share)	6.47
Forfeited (in dollars per share)	7.22
Balance, ending (in dollars per share)	$ 5.68