Business Segment Information - Summary of Net Margin as Gross Profit Less Sales and Marketing Expense by SBU Reporting Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Gross profit	$ 81,560	$ 79,044	$ 158,103	$ 149,467
Less: Sales and marketing	(46,037)	(42,946)	(90,853)	(87,231)
Total net margin	35,523	36,098	67,250	62,236
General and administrative	17,954	22,506	34,672	44,075
Research and development	6,792	6,451	14,428	12,296
Restatements and related costs	545	2,213	790	8,129
Charges related to U.S. Government resolutions (Note 11)	12,870		12,870
Operating (loss) income	(2,638)	4,928	4,490	(2,264)
Operating Segments [Member] \| BioStim [Member]
Segment Reporting Information [Line Items]
Total net margin	18,577	16,787	34,988	30,800
Operating Segments [Member] \| Biologics [Member]
Segment Reporting Information [Line Items]
Total net margin	6,719	7,285	12,823	13,229
Operating Segments [Member] \| Extremity Fixation [Member]
Segment Reporting Information [Line Items]
Total net margin	8,162	9,149	15,340	16,165
Operating Segments [Member] \| Spine Fixation [Member]
Segment Reporting Information [Line Items]
Total net margin	2,203	3,173	4,539	2,644
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total net margin	(138)	(296)	(440)	(602)
Material Reconciling Items [Member]
Segment Reporting Information [Line Items]
General and administrative	17,954	22,506	34,672	44,075
Research and development	6,792	6,451	14,428	12,296
Restatements and related costs	$ 545	$ 2,213	$ 790	$ 8,129

Net margin.

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Restatements and related costs.

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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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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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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ 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 210.5-03.1,2)
-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

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-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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The aggregate total amount of expenses directly related to the marketing or selling of products or services.

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