Fair value measurements - Schedule of roll-forward of fair value of earn-out consideration categorized as level 3 in fair value hierarchy (Detail) - Business Acquisition Contingent Consideration - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Opening balance	$ 2,517	$ 5,406
Payments made on earn-out consideration	(2,399)	(2,437)
Change in fair value of earn-out consideration	(118)	(452)
Closing balance	$ 0	$ 2,517