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SEGMENT AND GEOGRAPHIC INFORMATION - Net Sales and Profit by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Segment Net Sales |  |  |  |
Total revenue, net | $ 366,190 | $ 282,164 | $ 723,272 | $ 540,801
Segment Profit |  |  |  |
Operating income | 27,634 | 16,985 | 53,213 | 26,945
Amortization | (5,286) | (5,419) | (10,676) | (9,520)
Codman Specialty Surgical |  |  |  |
Segment Net Sales |  |  |  |
Total revenue, net | 239,504 | 159,857 | 475,619 | 316,147
Orthopedics and Tissue Technologies |  |  |  |
Segment Net Sales |  |  |  |
Total revenue, net | 126,686 | 122,307 | 247,653 | 224,654
Operating Segments |  |  |  |
Segment Profit |  |  |  |
Operating income | 128,259 | 98,260 | 250,188 | 188,042
Operating Segments | Codman Specialty Surgical |  |  |  |
Segment Profit |  |  |  |
Operating income | 91,118 | 67,250 | 180,609 | 129,953
Operating Segments | Orthopedics and Tissue Technologies |  |  |  |
Segment Profit |  |  |  |
Operating income | 37,141 | 31,010 | 69,579 | 58,089
Segment Reconciling Items |  |  |  |
Segment Profit |  |  |  |
Amortization | (5,286) | (5,419) | (10,676) | (9,520)
Corporate and other |  |  |  |
Segment Profit |  |  |  |
Operating income | $ (95,339) | $ (75,856) | $ (186,299) | $ (151,577)

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