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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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