Business Segment Information - Schedule of Net Sales by SBU Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Sales Information [Line Items]
Net sales	$ 104,622	$ 101,151	$ 100,954	$ 89,762	$ 100,284	$ 100,994	$ 100,985	$ 100,014	$ 396,489	$ 402,277	$ 397,611
Percent of Total Net Sales									100.00%	100.00%	100.00%
BioStim [Member]
Sales Information [Line Items]
Net sales									$ 164,955	$ 154,676	$ 145,085
Percent of Total Net Sales									41.60%	38.50%	36.50%
Biologics [Member]
Sales Information [Line Items]
Net sales									$ 59,832	$ 55,881	$ 53,746
Percent of Total Net Sales									15.10%	13.90%	13.50%
Extremity Fixation [Member]
Sales Information [Line Items]
Net sales									$ 96,034	$ 109,678	$ 103,359
Percent of Total Net Sales									24.20%	27.30%	26.00%
Spine Fixation [Member]
Sales Information [Line Items]
Net sales									$ 75,668	$ 82,042	$ 95,421
Percent of Total Net Sales									19.10%	20.40%	24.00%