Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Net sales	$ 109,875	$ 100,532	$ 213,823	$ 196,150
Operating Income (Loss)	6,780	8,222	8,537	16,229
Cardiovascular Segment [Member]
Segment Reporting Information [Line Items]
Net sales	105,953	96,560	205,707	188,230
Operating Income (Loss)	6,649	8,499	8,277	16,836
Endoscopy Segment [Member]
Segment Reporting Information [Line Items]
Net sales	3,922	3,972	8,116	7,920
Operating Income (Loss)	$ 131	$ (277)	$ 260	$ (607)