Net margin.

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Restatements and related costs.

+ References

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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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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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No definition available.

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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.

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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

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-Paragraph 1
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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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Business Segment Information - Summary of Net Margin by Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net margin									$ 140,648	$ 131,884	$ 136,818
General and administrative									74,404	87,157	79,074
Research and development									28,803	26,389	24,994
Restatements and related costs									2,005	9,083	15,614
Charges related to U.S. Government resolutions (Note 12)									14,369
Operating income	$ 7,416	$ 9,271	$ (2,695)	$ 7,075	$ 7,380	$ 4,139	$ 4,928	$ (7,192)	21,067	9,255	17,136
Operating Segments [Member] \| BioStim [Member]
Segment Reporting Information [Line Items]
Net margin									75,469	67,878	66,096
Operating Segments [Member] \| Biologics [Member]
Segment Reporting Information [Line Items]
Net margin									26,891	27,226	26,629
Operating Segments [Member] \| Extremity Fixation [Member]
Segment Reporting Information [Line Items]
Net margin									30,526	29,493	31,586
Operating Segments [Member] \| Spine Fixation [Member]
Segment Reporting Information [Line Items]
Net margin									8,650	8,547	14,243
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Net margin									(888)	(1,260)	(1,736)
Material Reconciling Items [Member]
Segment Reporting Information [Line Items]
General and administrative									74,404	87,157	79,074
Research and development									28,803	26,389	24,994
Restatements and related costs									$ 2,005	$ 9,083	$ 15,614