Revenue Recognition and Accounts Receivable - Schedule of Net Sales by Major Product Category by Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue Recognition And Accounts Receivable [Line Items]
Net sales	$ 112,428	$ 110,985	$ 339,415	$ 288,943
Change	1.30%		17.50%
Bone Growth Therapies [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Net sales	$ 45,168	47,066	$ 137,821	120,888
Change	(4.00%)		14.00%
Spinal Implants [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Net sales	$ 28,151	25,505	$ 83,943	67,025
Change	10.40%		25.20%
Biologics [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Net sales	$ 12,806	15,245	$ 41,351	40,319
Change	(16.00%)		2.60%
Global Spine [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Net sales	$ 86,125	87,816	$ 263,115	228,232
Change	(1.90%)		15.30%
Global Orthopedics [Member]
Revenue Recognition And Accounts Receivable [Line Items]
Net sales	$ 26,303	$ 23,169	$ 76,300	$ 60,711
Change	13.50%		25.70%