Business Segment Information - Schedule of Net Sales by SBU Reporting Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Sales Information [Line Items]
Net sales	$ 100,284	$ 100,994	$ 100,985	$ 100,014	$ 105,886	$ 91,806	$ 97,640	$ 102,279	$ 402,277	$ 397,611	$ 440,189
Percent of Total Net Sales									100.00%	100.00%	100.00%
BioStim [Member]
Sales Information [Line Items]
Net sales									154,676	145,085	174,562
Percent of Total Net Sales									38.00%	36.00%	40.00%
Biologics [Member]
Sales Information [Line Items]
Net sales									55,881	53,746	53,731
Percent of Total Net Sales									14.00%	14.00%	12.00%
Extremity Fixation [Member]
Sales Information [Line Items]
Net sales									109,678	103,359	112,011
Percent of Total Net Sales									27.00%	26.00%	25.00%
Spine Fixation [Member]
Sales Information [Line Items]
Net sales									$ 82,042	$ 95,421	$ 99,885
Percent of Total Net Sales									21.00%	24.00%	23.00%