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Segment Reporting - Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Revenues	$ 151,071	$ 138,082	$ 289,148	$ 267,659
Operating income	11,581	12,242	19,288	20,946
Cardiovascular Segment
Segment Reporting Information [Line Items]
Revenues	145,525	132,789	278,069	257,552
Operating income	10,880	11,258	17,529	19,327
Endoscopy Segment
Segment Reporting Information [Line Items]
Revenues	5,546	5,293	11,079	10,107
Operating income	$ 701	$ 984	$ 1,759	$ 1,619

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: 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(a))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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