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Segment Information (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Segment Reporting Information [Line Items]
Operating income	$ 32,707	$ 39,350	$ 55,204	$ 73,958
Unallocated expenses, net	(8,284)	(8,572)	(16,833)	(18,202)
Income before taxes	24,423	30,778	38,371	55,756
Operating Segments
Segment Reporting Information [Line Items]
Operating income	56,205	59,795	101,018	115,322
Operating Segments | Medical
Segment Reporting Information [Line Items]
Operating income	54,580	56,439	98,728	111,964
Operating Segments | Non-Medical
Segment Reporting Information [Line Items]
Operating income	1,625	3,356	2,290	3,358
Segment Reconciling Items
Segment Reporting Information [Line Items]
Operating income	$ (23,498)	$ (20,445)	$ (45,814)	$ (41,364)

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