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Segment Information (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	$ 290,467	$ 328,426
Operating Segments | Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	282,965	318,262
Operating Segments | Medical | Cardio & Vascular
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	149,165	179,205
Operating Segments | Medical | Cardiac & Neuromodulation
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	108,408	107,820
Operating Segments | Medical | Advanced Surgical, Orthopedics & Portable Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	25,392	31,237
Operating Segments | Non-Medical
Segment Reporting, Revenue Reconciling Item [Line Items]
Total sales	$ 7,502	$ 10,164

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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