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Segment Reporting | 6 Months Ended
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Jun. 30, 2018
Segment Reporting [Abstract] |
Segment Reporting | Segment Reporting. We report our operations in two operating segments: cardiovascular and endoscopy. Our cardiovascular segment consists of cardiology and radiology medical device products which assist in diagnosing and treating coronary artery disease, peripheral vascular disease and other non-vascular diseases and includes embolotherapeutic, cardiac rhythm management ("CRM"), electrophysiology ("EP"), critical care, and interventional oncology and spine devices. Our endoscopy segment focuses on the gastroenterology, pulmonary and thoracic surgery specialties, with a portfolio consisting primarily of stents, dilation balloons, certain inflation devices, guidewires, and other disposable products. We evaluate the performance of our operating segments based on operating income. Financial information relating to our reportable operating segments and reconciliations to the consolidated totals for the three and six-month periods ended June 30, 2018 and 2017, are as follows (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Net Sales (1) |  |  |  |  |  |  |  |  |  |  |
Cardiovascular | $ | 216,387 |  |  | $ | 179,663 |  |  | $ | 412,241 |  |  | $ | 344,418 |
Endoscopy | 8,423 |  |  | 6,886 |  |  | 15,603 |  |  | 13,200 |
Total net sales | $ | 224,810 |  |  | $ | 186,549 |  |  | $ | 427,844 |  |  | $ | 357,618 |
Operating Income (1) |  |  |  |  |  |  |
Cardiovascular | $ | 12,663 |  |  | $ | 11,493 |  |  | $ | 19,060 |  |  | $ | 15,475 |
Endoscopy | 2,451 |  |  | 1,869 |  |  | 4,835 |  |  | 3,496 |
Total operating income | $ | 15,114 |  |  | $ | 13,362 |  |  | $ | 23,895 |  |  | $ | 18,971 |
(1) Sales and operating income have been adjusted from prior disclosure to reflect changes in product classifications between our operating segments, which were made to be consistent with updates in the management of our product portfolios in 2018.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
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