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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 224,810 | $ 186,549 | $ 427,844 | $ 357,618
United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 124,445 | 108,106 | 234,501 | 210,222
International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 100,365 | 78,443 | 193,343 | 147,396
Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 216,387 | 179,663 | 412,241 | 344,418
Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 116,324 | 101,394 | 219,461 | 197,416
Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 100,063 | 78,269 | 192,780 | 147,002
Endoscopy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 8,423 | 6,886 | 15,603 | 13,200
Stand-alone devices | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 92,496 | 71,056 | 175,742 | 134,709
Stand-alone devices | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 50,941 | 37,202 | 94,953 | 73,366
Stand-alone devices | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 41,555 | 33,854 | 80,789 | 61,343
Custom kits and procedure trays | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 33,992 | 31,797 | 67,264 | 60,672
Custom kits and procedure trays | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 23,667 | 24,271 | 45,984 | 45,737
Custom kits and procedure trays | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 10,325 | 7,526 | 21,280 | 14,935
Inflation devices | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 24,305 | 20,789 | 46,724 | 39,296
Inflation devices | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 8,160 | 8,042 | 15,828 | 16,017
Inflation devices | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 16,145 | 12,747 | 30,896 | 23,279
Catheters | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 39,374 | 32,429 | 73,239 | 62,605
Catheters | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 16,704 | 16,022 | 31,974 | 31,151
Catheters | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 22,670 | 16,407 | 41,265 | 31,454
Embolization devices | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 12,724 | 12,158 | 25,310 | 24,685
Embolization devices | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 5,094 | 5,593 | 10,126 | 11,134
Embolization devices | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 7,630 | 6,565 | 15,184 | 13,551
CRM/EP | Cardiovascular |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 13,496 | 11,434 | 23,962 | 22,451
CRM/EP | Cardiovascular | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 11,758 | 10,264 | 20,596 | 20,011
CRM/EP | Cardiovascular | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 1,738 | 1,170 | 3,366 | 2,440
Endoscopy devices | Endoscopy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 8,423 | 6,886 | 15,603 | 13,200
Endoscopy devices | Endoscopy | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | 8,121 | 6,712 | 15,040 | 12,806
Endoscopy devices | Endoscopy | International |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Net sales | $ 302 | $ 174 | $ 563 | $ 394

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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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