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RESTRUCTURING AND ASSET IMPAIRMENTS - Restructuring Costs by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		24 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 29, 2018
Segment Reporting Information [Line Items]
Restructuring costs	$ 2,653	$ 4,675	$ 5,887	$ 7,169
RMS
Segment Reporting Information [Line Items]
Restructuring costs	381	0	1,323	0	$ 20,100
DSA
Segment Reporting Information [Line Items]
Restructuring costs	1,843	56	2,529	1,021
Manufacturing
Segment Reporting Information [Line Items]
Restructuring costs	429	0	2,035	870
Unallocated corporate
Segment Reporting Information [Line Items]
Restructuring costs	$ 0	$ 4,619	$ 0	$ 5,278

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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