Business Segment Information - Summary of EBIDTA by Reporting Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total EBITDA	$ (2,228)	$ 42,372	$ 56,931
Depreciation and amortization	(24,699)	(18,659)	(20,124)
Interest expense, net	(122)	(828)	(416)
Income (loss) before income taxes	(27,049)	22,885	36,391
Operating Segments [Member] \| Global Spine [Member]
Segment Reporting Information [Line Items]
Total EBITDA	39,528	76,545	84,034
Operating Segments [Member] \| Global Extremities [Member]
Segment Reporting Information [Line Items]
Total EBITDA	7,496	9,453	7,143
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Total EBITDA	$ (49,252)	$ (43,626)	$ (34,246)

Earnings before interest, taxes, depreciation and amortization.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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The net amount of operating interest income (expense).

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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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