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Restructuring charges - Charges Recognized (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 25, 2016 | Sep. 27, 2015 | Sep. 25, 2016 | Sep. 27, 2015
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 3,027 | $ 660 | $ 12,876 | $ 5,688
Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 2,784 | 324 | 12,027 | 4,011
Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 54 | 34 | 232 | 409
Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 107 | 241 | 114 | 1,141
Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 82 | 61 | 503 | 127
2016 Other Restructuring programs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 1,713 |  | 1,713 |
2016 Other Restructuring programs | Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 1,713 |  | 1,713 |
2016 Other Restructuring programs | Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 |  | 0 |
2016 Other Restructuring programs | Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 |  | 0 |
2016 Other Restructuring programs | Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 |  | 0 |
2016 Manufacturing footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 925 |  | 11,279 |
2016 Manufacturing footprint realignment plan | Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 851 |  | 10,919 |
2016 Manufacturing footprint realignment plan | Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 |  | 0 |
2016 Manufacturing footprint realignment plan | Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 |  | 0 |
2016 Manufacturing footprint realignment plan | Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 74 |  | 360 |
2015 Restructuring programs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 58 | (74) | 48 | 4,306
2015 Restructuring programs | Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | (103) | (198) | (502) | 3,361
2015 Restructuring programs | Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 54 | 37 | 232 | 166
2015 Restructuring programs | Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 107 | 78 | 200 | 723
2015 Restructuring programs | Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 | 9 | 118 | 56
2014 Manufacturing footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 314 | 831 | (101) | 1,497
2014 Manufacturing footprint realignment plan | Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 308 | 619 | (118) | 831
2014 Manufacturing footprint realignment plan | Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 | (3) | 0 | 241
2014 Manufacturing footprint realignment plan | Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 | 163 | 0 | 389
2014 Manufacturing footprint realignment plan | Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 6 | 52 | 17 | 36
2014 European restructuring plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 17 | (97) |  |
2014 European restructuring plan | Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 15 | (97) |  |
2014 European restructuring plan | Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 | 0 |  |
2014 European restructuring plan | Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 0 | 0 |  |
2014 European restructuring plan | Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 2 | $ 0 |  |
Other restructuring programs - prior years |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | (63) | (115)
Other restructuring programs - prior years | Termination Benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | 15 | (181)
Other restructuring programs - prior years | Facility Closure Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | 0 | 2
Other restructuring programs - prior years | Contract Termination Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | (86) | 29
Other restructuring programs - prior years | Other Exit Costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  | $ 8 | $ 35

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