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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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The net result for the period of deducting operating expenses from operating revenues.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Segment Information (Reconciliation of Operating Profit (Loss) from Segments to Consolidated) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Oct. 01, 2021	Dec. 31, 2020	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting Information [Line Items]
Operating income	$ 33,090		$ 39,758	$ 107,048	$ 93,019
Unallocated expenses, net	(9,911)		(8,358)	(28,113)	(24,815)
Income before taxes	23,179		31,400	78,935	68,204
Gain related to litigation settlement		$ 28,200	28,200		28,200
Operating Segments
Segment Reporting Information [Line Items]
Operating income	54,363		29,991	169,685	125,797
Operating Segments \| Medical
Segment Reporting Information [Line Items]
Operating income	52,347		28,777	164,311	120,903
Operating Segments \| Non-Medical
Segment Reporting Information [Line Items]
Operating income	2,016		1,214	5,374	4,894
Segment Reconciling Items
Segment Reporting Information [Line Items]
Operating income	$ (21,273)		$ 9,767	$ (62,637)	$ (32,778)