Business Segment Information - Schedule of Net Sales by SBU Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Net Sales	$ 104,075	$ 100,954	$ 202,754	$ 190,716
Reported Change	3.10%		6.30%
BioStim [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 44,758	40,703	$ 85,802	78,403
Reported Change	10.00%		9.40%
Biologics [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 14,256	15,274	$ 28,350	29,235
Reported Change	(6.70%)		(3.00%)
Extremity Fixation [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 26,817	25,594	$ 51,526	47,409
Reported Change	4.80%		8.70%
Spine Fixation [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 18,244	$ 19,383	$ 37,076	$ 35,669
Reported Change	(5.90%)		3.90%