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Segment Reporting And Foreign Operations Segment Reporting By Business Segment (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net | $ 91,092 | $ 90,477 | $ 91,249 | $ 86,631 | $ 81,203 | $ 73,172 | $ 74,948 | $ 67,432 | $ 359,449 | $ 296,755 | $ 257,462
Sales By Business Segment % Change Current Year vs Prior Year | 21.00% |  |  |  | 15.00% |  |  |  | 21.00% | 15.00% | 13.00%
Stand Alone Devices [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | 101,959 | 88,586 | 76,075
Sales By Business Segment % Change Current Year vs Prior Year | 15.00% |  |  |  | 16.00% |  |  |  | 15.00% | 16.00% | 12.00%
Custom Kit And Procedures Trays [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | 91,532 | 82,799 | 74,541
Sales By Business Segment % Change Current Year vs Prior Year | 11.00% |  |  |  | 11.00% |  |  |  | 11.00% | 11.00% | 12.00%
Inflation Devices [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | 67,353 | 62,495 | 61,058
Sales By Business Segment % Change Current Year vs Prior Year | 8.00% |  |  |  | 2.00% |  |  |  | 8.00% | 2.00% | (1.00%)
Catheters [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | 55,357 | 44,824 | 38,126
Sales By Business Segment % Change Current Year vs Prior Year | 23.00% |  |  |  | 18.00% |  |  |  | 23.00% | 18.00% | 23.00%
Embolization Devices [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | 31,229 | 9,003 | 0
Sales By Business Segment % Change Current Year vs Prior Year | 247.00% |  |  |  | 0.00% |  |  |  | 247.00% | 0.00% | 0.00%
Total Cardiovascular [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | 347,430 | 287,707 | 249,800
Sales By Business Segment % Change Current Year vs Prior Year | 21.00% |  |  |  | 15.00% |  |  |  | 21.00% | 15.00% | 10.00%
Endoscopy Devices [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, Net |  |  |  |  |  |  |  |  | $ 12,019 | $ 9,048 | $ 7,662
Sales By Business Segment % Change Current Year vs Prior Year | 33.00% |  |  |  | 18.00% |  |  |  | 33.00% | 18.00% | 0.00%

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 5 -Section 03 -Paragraph 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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