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Restructuring and other impairment charges - by segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | $ 14,790 | $ 15,871 | $ 7,819
Vascular North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 2,595 | 5,843 | 3,049
Interventional North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 4,908 | 459 | 1,894
Anesthesia North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 1,262 | 1,839 | 384
Surgical North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 0 | 151 | 397
EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 5,722 | 4,423 | 4
Asia |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 0 | 0 | 313
OEM |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | 0 | 795 | 61
All other |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Total restructuring charges | $ 303 | $ 2,361 | $ 1,717

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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