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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
	Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Operating income from continuing operations	$ 44,358	$ 36,062	$ 74,401	$ 59,965
Unallocated expenses, net	(12,563)	(26,248)	(24,148)	(46,414)
Income from continuing operations before taxes	31,795	9,814	50,253	13,551
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income from continuing operations	65,572	56,497	116,285	105,776
Operating Segments [Member] | Medical Segment [Member]
Segment Reporting Information [Line Items]
Operating income from continuing operations	61,179	51,557	108,694	99,274
Operating Segments [Member] | Non-Medical Segment [Member]
Segment Reporting Information [Line Items]
Operating income from continuing operations	4,393	4,940	7,591	6,502
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Operating income from continuing operations	$ (21,214)	$ (20,435)	$ (41,884)	$ (45,811)

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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