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Acquisitions - Pro Forma (Details) - Vascular Solutions, Inc. - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
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Jul. 02, 2017 | Jun. 26, 2016 | Jul. 02, 2017 | Jun. 26, 2016
Business Acquisition [Line Items] |  |  |  |
Net revenue | $ 528,613 | $ 514,574 | $ 1,039,318 | $ 978,697
Net income | $ 79,221 | $ 59,352 | $ 128,302 | $ 77,252
Net Income, Basic earnings per common share (in USD per share) | $ 1.76 | $ 1.36 | $ 2.85 | $ 1.81
Net Income, Diluted earnings per common share (in USD per share) | $ 1.69 | $ 1.26 | $ 2.75 | $ 1.61
Basic, weighted average common shares outstanding (in shares) | 44,996 | 43,549 | 44,945 | 42,598
Diluted, weighted average common shares outstanding (in shares) | 46,818 | 47,246 | 46,716 | 48,014

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