Merger and acquisitions - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Jan. 05, 2023	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition [Line Items]
Conversion of stock, shares converted	0.4163
Net sales		$ 188,608	$ 175,204
Net loss		(36,020)	(60,938)
SeaSpine Holdings Corporation [Member]
Business Acquisition [Line Items]
Direct acquisition-related costs		100	6,500
Net sales		70,500	60,900
Net loss		14,300	27,900
Global Spine [Member]
Business Acquisition [Line Items]
Net sales		$ 161,293	$ 149,206