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RESTRUCTURING (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 18 Months Ended |
--- | --- | --- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Mar. 31, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and turnaround costs | $ 2,118 | $ 5,787 | $ 5,467 | $ 8,270 |  |
Restructuring liability | 14,971 |  | 14,971 |  | $ 14,971 | $ 28,535
Restructuring liability payable in next twelve months | 13,600 |  | 13,600 |  | 13,600 |
Restructuring costs | (33) | 151 | (325) | 1,207 |  |
Turnaround costs | 2,151 | 5,636 | 5,792 | 7,063 |  |
2018 Program |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and turnaround costs | 1,900 |  | 5,300 |  | 41,900 |
Restructuring liability | 14,492 |  | 14,492 |  | 14,492 | 27,129
Restructuring costs |  |  | (382) |  |  |
2018 Program | Minimum |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Expected cost |  |  |  |  |  | 50,000
2018 Program | Minimum | Employee Severance |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Expected cost |  |  |  |  |  | 35,000
2018 Program | Maximum |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Expected cost |  |  |  |  |  | 60,000
2018 Program | Maximum | Employee Severance |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Expected cost |  |  |  |  |  | 40,000
2017 Program |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and turnaround costs |  | $ 5,200 |  | $ 7,700 |  |
Restructuring liability | $ 479 |  | 479 |  | $ 479 | $ 1,406
Restructuring costs |  |  | $ 57 |  |  |

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