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RESTRUCTURING AND ASSET IMPAIRMENTS - Restructuring Costs by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		24 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018	Dec. 29, 2018
Segment Reporting Information [Line Items]
Restructuring costs	$ 1,685	$ 1,856	$ 3,234	$ 2,494
RMS
Segment Reporting Information [Line Items]
Restructuring costs	641	0	942	0	$ 20,100
DSA
Segment Reporting Information [Line Items]
Restructuring costs	672	1,197	685	965
Manufacturing
Segment Reporting Information [Line Items]
Restructuring costs	372	0	1,607	870
Unallocated corporate
Segment Reporting Information [Line Items]
Restructuring costs	$ 0	$ 659	$ 0	$ 659

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
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