Mergers and acquisitions - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 05, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Conversion of stock, shares converted	0.4163
Net sales		$ 799,491,000	$ 746,641,000	$ 460,713,000
Net loss		(125,997,000)	(151,395,000)	(19,749,000)
Pre tax expenses		9,376,000	1,176,000	147,000
Accrued liabilities			7,000,000
Global Spine [Member]
Business Acquisition [Line Items]
Net sales		675,314,000	631,319,000	$ 353,174,000
SeaSpine Holdings Corporation [Member]
Business Acquisition [Line Items]
Direct acquisition-related costs		0	9,900,000
Net sales		294,000,000	258,900,000
Net loss		$ 63,400,000	84,000,000
Pre tax expenses			$ 18,200,000