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SEGMENT AND GEOGRAPHIC INFORMATION - Net Sales and Profit by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Segment Net Sales |  |
Total Revenues | $ 357,082 | $ 258,636
Segment Profit |  |
Operating income | 25,579 | 9,959
Amortization | (5,390) | (4,101)
Codman Specialty Surgical |  |
Segment Net Sales |  |
Total Revenues | 236,115 | 156,290
Orthopedics and Tissue Technologies |  |
Segment Net Sales |  |
Total Revenues | 120,967 | 102,346
Operating Segments |  |
Segment Profit |  |
Operating income | 121,929 | 89,782
Operating Segments | Codman Specialty Surgical |  |
Segment Profit |  |
Operating income | 89,491 | 62,703
Operating Segments | Orthopedics and Tissue Technologies |  |
Segment Profit |  |
Operating income | 32,438 | 27,079
Segment Reconciling Items |  |
Segment Profit |  |
Amortization | (5,390) | (4,101)
Corporate and other |  |
Segment Profit |  |
Operating income | $ (90,960) | $ (75,722)

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