Income taxes - Schedule of deferred tax assets and liability (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets
Stock-based compensation	$ 3,833	$ 4,004
Capitalized R&D	3,968	1,056
Accrued compensation	1,950	931
Lease liability	636	465
Net operating loss	267	401
State tax accrual	183	243
Allowance for bad debt	185	105
Total deferred tax assets	11,022	7,205
Deferred tax liabilities
Intangible assets	(6,908)	(5,207)
Lease right-of-use assets	(597)	(465)
Fixed asset basis	(373)	(291)
Total deferred tax liabilities	(7,878)	(5,963)
Net deferred taxes	$ 3,144	$ 1,242