Business Segment Information - Schedule of Net Sales by SBU Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net Sales	$ 98,679	$ 89,762
Reported Change	9.90%
Constant Currency Change	11.80%
BioStim [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 41,044	37,700
Reported Change	8.90%
Constant Currency Change	8.90%
Biologics [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 14,094	13,961
Reported Change	1.00%
Constant Currency Change	1.00%
Extremity Fixation [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 24,709	21,815
Reported Change	13.30%
Constant Currency Change	20.90%
Spine Fixation [Member]
Segment Reporting Information [Line Items]
Net Sales	$ 18,832	$ 16,286
Reported Change	15.60%
Constant Currency Change	15.80%