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Segment Information (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 02, 2021 | Apr. 03, 2020
Segment Reporting Information [Line Items] |  |
Operating income | $ 34,608 | $ 44,076
Unallocated expenses, net | (9,630) | (7,437)
Income before taxes | 24,978 | 36,639
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Operating income | 55,527 | 66,429
Operating Segments | Medical |  |
Segment Reporting Information [Line Items] |  |
Operating income | 55,525 | 65,216
Operating Segments | Non-Medical |  |
Segment Reporting Information [Line Items] |  |
Operating income | 2 | 1,213
Segment Reconciling Items |  |
Segment Reporting Information [Line Items] |  |
Operating income | $ (20,919) | $ (22,353)

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