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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 221,659 | $ 179,337 | $ 649,504 | $ 536,955
United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 126,108 | 103,091 | 360,610 | 313,314
International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 95,551 | 76,246 | 288,894 | 223,641
Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 212,150 | 172,723 | 624,392 | 517,140
Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 116,879 | 96,702 | 336,341 | 294,119
Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 95,271 | 76,021 | 288,051 | 223,021
Endoscopy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 9,509 | 6,614 | 25,112 | 19,815
Stand-alone devices | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 90,975 | 68,749 | 266,717 | 203,459
Stand-alone devices | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 52,173 | 36,383 | 147,125 | 109,750
Stand-alone devices | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 38,802 | 32,366 | 119,592 | 93,709
Custom kits and procedure trays | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 33,095 | 30,411 | 100,359 | 91,082
Custom kits and procedure trays | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 23,199 | 23,085 | 69,184 | 68,823
Custom kits and procedure trays | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 9,896 | 7,326 | 31,175 | 22,259
Inflation devices | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 22,893 | 20,033 | 69,617 | 59,329
Inflation devices | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 7,819 | 8,241 | 23,647 | 24,257
Inflation devices | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 15,074 | 11,792 | 45,970 | 35,072
Catheters | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 40,591 | 31,751 | 113,830 | 94,357
Catheters | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 18,081 | 15,377 | 50,055 | 46,529
Catheters | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 22,510 | 16,374 | 63,775 | 47,828
Embolization devices | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 12,395 | 12,252 | 37,706 | 36,936
Embolization devices | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 5,145 | 5,414 | 15,272 | 16,548
Embolization devices | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 7,250 | 6,838 | 22,434 | 20,388
CRM/EP | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 12,201 | 9,527 | 36,163 | 31,977
CRM/EP | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 10,462 | 8,202 | 31,058 | 28,212
CRM/EP | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,739 | 1,325 | 5,105 | 3,765
Endoscopy devices | Endoscopy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 9,509 | 6,614 | 25,112 | 19,815
Endoscopy devices | Endoscopy | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 9,229 | 6,389 | 24,269 | 19,195
Endoscopy devices | Endoscopy | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 280 | $ 225 | $ 843 | $ 620

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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