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SEGMENT AND GEOGRAPHIC INFORMATION (Net Sales and Profit by Reportable Segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Net Sales |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 383,315 | $ 365,854 | $ 366,190 | $ 357,082 | $ 368,602 | $ 278,834 | $ 282,164 | $ 258,636 | $ 1,472,441 | $ 1,188,236 | $ 992,075
Segment Profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 110,998 | 44,804 | 115,340
Amortization |  |  |  |  |  |  |  |  | (21,160) | (20,370) | (13,862)
Codman Specialty Surgical |  |  |  |  |  |  |  |  |  |  |
Segment Net Sales |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 963,929 | 720,301 | 632,524
Orthopedics and Tissue Technologies |  |  |  |  |  |  |  |  |  |  |
Segment Net Sales |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 508,512 | 467,935 | 359,551
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 512,846 | 422,668 | 360,481
Operating Segments | Codman Specialty Surgical |  |  |  |  |  |  |  |  |  |  |
Segment Profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 363,336 | 292,971 | 256,629
Operating Segments | Orthopedics and Tissue Technologies |  |  |  |  |  |  |  |  |  |  |
Segment Profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 149,510 | 129,697 | 103,852
Segment Reconciling Items |  |  |  |  |  |  |  |  |  |  |
Segment Profit |  |  |  |  |  |  |  |  |  |  |
Amortization |  |  |  |  |  |  |  |  | (21,160) | (20,370) | (13,862)
Corporate and other |  |  |  |  |  |  |  |  |  |  |
Segment Profit |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | $ (380,688) | $ (357,494) | $ (231,279)

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