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Acquisitions - Purchase Price Allocation (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013 | Oct. 04, 2013 Radial Assist | Oct. 04, 2013 Datascope | Oct. 04, 2013 Developed technology Radial Assist | Oct. 04, 2013 Developed technology Datascope | Oct. 04, 2013 Customer lists Radial Assist | Oct. 04, 2013 Customer lists Datascope | Oct. 04, 2013 Trademarks Radial Assist | Oct. 04, 2013 Trademarks Datascope
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Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Inventories |  |  | $ 16 | $ 478 |  |  |  |  |  |
Intangibles |  |  |  |  | 1,520 | 18,200 | 20 | 390 | 40 | 320
Goodwill | 184,505 | 184,505 | 904 | 8,112 |  |  |  |  |  |
Total assets acquired |  |  | $ 2,500 | $ 27,500 |  |  |  |  |  |

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