Business Segment Information - Schedule of Net Sales by SBU Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Net Sales	$ 101,151	$ 100,994	$ 291,867	$ 301,993
Reported Increase (Decrease) (as percent)	0.20%		(3.40%)
Constant Currency Increase (Decrease) (as percent)	4.10%		0.60%
BioStim [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 41,559	38,285	$ 119,962	114,937
Reported Increase (Decrease) (as percent)	8.60%		4.40%
Constant Currency Increase (Decrease) (as percent)	8.60%		4.40%
Biologics [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 14,639	13,856	$ 43,874	40,718
Reported Increase (Decrease) (as percent)	5.70%		7.80%
Constant Currency Increase (Decrease) (as percent)	5.70%		7.80%
Extremity Fixation [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 24,694	27,636	$ 72,103	82,005
Reported Increase (Decrease) (as percent)	(10.60%)		(12.10%)
Constant Currency Increase (Decrease) (as percent)	3.40%		2.10%
Spine Fixation [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 20,259	$ 21,217	$ 55,928	$ 64,333
Reported Increase (Decrease) (as percent)	(4.50%)		(13.10%)
Constant Currency Increase (Decrease) (as percent)	(3.90%)		(12.60%)