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Business Segment Information - Summary of EBIDTA by Reporting Segment (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Segment Reporting Information [Line Items]        
Total EBITDA $ (8,989) $ 6,393 $ 3,394 $ 7,268
Depreciation and amortization (6,942) (6,178) (13,269) (11,905)
Interest income (expense), net (901) 457 (1,324) 200
Income (loss) before income taxes (16,832) 672 (11,199) (4,437)
Operating Segments [Member] | Global Spine [Member]        
Segment Reporting Information [Line Items]        
Total EBITDA (3,707) 16,523 18,710 27,098
Operating Segments [Member] | Global Extremities [Member]        
Segment Reporting Information [Line Items]        
Total EBITDA (3,359) 2,750 (5,253) 2,577
Corporate, Non-Segment [Member]        
Segment Reporting Information [Line Items]        
Total EBITDA $ (1,923) $ (12,880) $ (10,063) $ (22,407)