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Restructuring and impairment charges (credits) - Charges Recognized (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2019 | Sep. 30, 2018 | Sep. 29, 2019 | Sep. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 1,268 | $ 1,964 | $ 13,437 | $ 58,515
Asset impairment charges |  | 17,245 | 6,911 | 19,110
Restructuring and impairment charges | 1,268 | 19,209 | 20,348 | 77,625
Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 906 | 1,587 | 11,772 | 57,160
Asset impairment charges |  | 0 | 0 | 0
Restructuring and impairment charges |  | 1,587 | 11,772 | 57,160
Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 362 | 377 | 1,665 | 1,355
Asset impairment charges |  | 17,245 | 6,911 | 19,110
Restructuring and impairment charges |  | 17,622 | 8,576 | 20,465
2019 Footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 622 |  | 13,168 |
2019 Footprint realignment plan | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 584 |  | 13,100 |
2019 Footprint realignment plan | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 38 |  | 68 |
2018 Footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 389 | 1,264 | (741) | 53,738
2018 Footprint realignment plan | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 315 | 1,119 | (1,523) | 53,463
2018 Footprint realignment plan | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 74 | 145 | 782 | 275
Other restructuring programs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 257 | 700 | 1,010 | 1,981
Other restructuring programs | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | 7 | 468 | 195 | 1,318
Other restructuring programs | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges | $ 250 | $ 232 | $ 815 | 663
2016 Footprint realignment plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | 2,796
2016 Footprint realignment plan | Termination benefits |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | 2,379
2016 Footprint realignment plan | Other Restructuring costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring charges |  |  |  | $ 417

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