Business Segment Information - Summary of Net Sales by Geographic Destination for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 121,394	$ 73,135	$ 226,987	$ 177,958
Global Spine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	94,650	58,098	176,990	140,416
Global Orthopedics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	26,744	15,037	49,997	37,542
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	95,233	59,276	178,579	142,425
U.S. [Member] | Global Spine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	89,077	55,236	166,832	132,342
U.S. [Member] | Global Orthopedics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,156	4,040	11,747	10,083
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	26,161	13,859	48,408	35,533
International [Member] | Global Spine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	5,573	2,862	10,158	8,074
International [Member] | Global Orthopedics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 20,588	$ 10,997	$ 38,250	$ 27,459