Business Segment Information - Summary of Net Sales by Geographic Destination for Each Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 110,985	$ 113,499	$ 288,943	$ 338,461
Global Spine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	87,816	88,091	228,232	264,088
Global Extremities [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	23,169	25,408	60,711	74,373
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	89,833	89,452	232,258	267,021
U.S. [Member] | Global Spine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	83,477	82,816	215,819	246,943
U.S. [Member] | Global Extremities [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6,356	6,636	16,439	20,078
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	21,152	24,047	56,685	71,440
International [Member] | Global Spine [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	4,339	5,275	12,413	17,145
International [Member] | Global Extremities [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 16,813	$ 18,772	$ 44,272	$ 54,295