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Segment Reporting and Foreign Operations - Sales by Business Segment (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 120,016 | $ 115,210 | $ 109,875 | $ 103,948 | $ 102,231 | $ 95,907 | $ 100,532 | $ 95,618 | $ 449,049 | $ 394,288 | $ 359,449 |
% Change | 13.89% |  |  |  | 10.00% |  |  |  | 13.89% | 10.00% |  | 21.00%
Cardiovascular Segment |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 432,124 | 378,493 | 347,430 |
% Change | 14.17% |  |  |  | 9.00% |  |  |  | 14.17% | 9.00% |  | 21.00%
Cardiovascular Segment | Stand Alone Devices |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 125,445 | 114,242 | 101,959 |
% Change | 9.81% |  |  |  | 12.05% |  |  |  | 9.81% | 12.05% |  | 15.00%
Cardiovascular Segment | Custom Kit And Procedures Trays |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 103,700 | 94,586 | 91,532 |
% Change | 9.64% |  |  |  | 3.34% |  |  |  | 9.64% | 3.34% |  | 11.00%
Cardiovascular Segment | Inflation Devices |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 66,182 | 68,979 | 67,353 |
% Change | (4.05%) |  |  |  | 2.41% |  |  |  | (4.05%) | 2.41% |  | 8.00%
Cardiovascular Segment | Catheters |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 75,131 | 64,878 | 55,357 |
% Change | 15.80% |  |  |  | 17.20% |  |  |  | 15.80% | 17.20% |  | 23.00%
Cardiovascular Segment | Embolization Devices |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 33,395 | 33,870 | 31,229 |
% Change | (1.40%) |  |  |  | 8.46% |  |  |  | (1.40%) | 8.46% |  | 247.00%
Cardiovascular Segment | Electrophysiology |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 28,271 | 1,938 | 0 |
% Change | 1358.77% |  |  |  | 0.00% |  |  |  | 1358.77% | 0.00% |  | 0.00%
Endoscopy Segment |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 16,925 | 15,795 | 12,019 |
Endoscopy Segment | Endoscopy Devices |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 16,925 | $ 15,795 | $ 12,019 |
% Change | 7.15% |  |  |  | 31.00% |  |  |  | 7.15% | 31.00% |  | 33.00%

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