Business Segment Information - Summary of Net Margin by SBU Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Total net margin	$ 36,900	$ 31,157	$ 104,136	$ 93,393
General and administrative	18,581	19,348	53,341	63,423
Research and development	6,858	6,523	21,294	18,819
Restatements and related costs	691	1,147	1,481	9,276
Charges related to U.S. Government resolutions (Note 11)	1,499		14,369
Operating income	9,271	4,139	13,651	1,875
Operating Segments [Member] \| BioStim [Member]
Segment Reporting Information [Line Items]
Total net margin	19,996	16,834	54,980	47,634
Operating Segments [Member] \| Biologics [Member]
Segment Reporting Information [Line Items]
Total net margin	6,821	6,296	19,642	19,525
Operating Segments [Member] \| Extremity Fixation [Member]
Segment Reporting Information [Line Items]
Total net margin	8,834	6,442	24,170	22,607
Operating Segments [Member] \| Spine Fixation [Member]
Segment Reporting Information [Line Items]
Total net margin	1,388	1,938	5,925	4,582
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total net margin	(139)	(353)	(581)	(955)
Material Reconciling Items [Member]
Segment Reporting Information [Line Items]
General and administrative	18,581	19,348	53,341	63,423
Research and development	6,858	6,523	21,294	18,819
Restatements and related costs	$ 691	$ 1,147	$ 1,481	$ 9,276

Net margin.

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Restatements and related costs.

+ References

No definition available.

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- Definition

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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The net result for the period of deducting operating expenses from operating revenues.

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 730
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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