GOODWILL AND INTANGIBLE ASSETS - Intangible Assets, Net by Major Class (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Finite-lived intangible assets
Gross	$ 655,971	$ 623,870
Accumulated Amortization	(286,209)	(229,422)
Net	369,762	394,448
Backlog
Finite-lived intangible assets
Gross	8,111	8,370
Accumulated Amortization	(8,111)	(6,390)
Net	0	1,980
Technology
Finite-lived intangible assets
Gross	81,309	71,425
Accumulated Amortization	(27,157)	(14,314)
Net	54,152	57,111
Trademarks and trade names
Finite-lived intangible assets
Gross	8,661	8,177
Accumulated Amortization	(4,562)	(4,124)
Net	4,099	4,053
Other
Finite-lived intangible assets
Gross	17,465	16,775
Accumulated Amortization	(7,845)	(5,628)
Net	9,620	11,147
Other intangible assets
Finite-lived intangible assets
Gross	115,546	104,747
Accumulated Amortization	(47,675)	(30,456)
Net	67,871	74,291
Client relationships
Finite-lived intangible assets
Gross	540,425	519,123
Accumulated Amortization	(238,534)	(198,966)
Net	$ 301,891	$ 320,157

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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