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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Segment Reporting (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($)	Sep. 24, 2016 USD ($)	Jun. 25, 2016 USD ($)	Mar. 26, 2016 USD ($)	Dec. 26, 2015 USD ($)	Sep. 26, 2015 USD ($)	Jun. 27, 2015 USD ($)	Mar. 28, 2015 USD ($)	Dec. 31, 2016 USD ($) segments	Dec. 26, 2015 USD ($)	Dec. 27, 2014 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments | segments									3
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue	$ 466,789	$ 425,720	$ 434,055	$ 354,868	$ 353,850	$ 349,465	$ 339,573	$ 320,414	$ 1,681,432	$ 1,363,302	$ 1,297,662
Operating income	$ 69,091	$ 58,795	$ 58,061	$ 51,472	$ 52,269	$ 55,440	$ 55,735	$ 43,005	237,419	206,449	177,670
Manufacturing
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue									350,802	280,718	255,788
Operating income									104,543	74,675	79,260
RMS
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue									494,037	470,411	503,656
Operating income									136,365	120,973	120,736
Operating Segments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating income									$ 379,065	317,629	269,745
Operating Segments | Reclassified Between Segments | Manufacturing
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue										2,800	3,700
Operating income										500	600
Operating Segments | Reclassified Between Segments | RMS
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Total revenue										(2,800)	(3,700)
Operating income										$ (500)	$ (600)

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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