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Segment Information (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	$ 305,574	$ 235,942	$ 908,064	$ 804,483
Operating Segments | Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	296,121	227,684	880,712	777,330
Operating Segments | Medical | Cardio & Vascular
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	160,858	124,596	462,632	432,885
Operating Segments | Medical | Cardiac & Neuromodulation
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	106,543	72,909	334,700	252,404
Operating Segments | Medical | Advanced Surgical, Orthopedics & Portable Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	28,720	30,179	83,380	92,041
Operating Segments | Non-Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	$ 9,453	$ 8,258	$ 27,352	$ 27,153

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