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Goodwill and Intangible Assets - Schedule of Other Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 26, 2016 | Jul. 01, 2017 | Dec. 31, 2016
Other intangible assets |  |  |
Gross |  | $ 626,756 | $ 623,870
Accumulated Amortization |  | (257,962) | (229,422)
Net |  | 368,794 | 394,448
Impairment charge | $ 1,900 |  |
Backlog |  |  |
Other intangible assets |  |  |
Gross |  | 7,970 | 8,370
Accumulated Amortization |  | (7,341) | (6,390)
Net |  | 629 | 1,980
Backlog | CDMO Business | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |
Other intangible assets |  |  |
Decrease in intangible assets resulting from divestiture of business |  | 300 |
Technology |  |  |
Other intangible assets |  |  |
Gross |  | 74,788 | 71,425
Accumulated Amortization |  | (20,539) | (14,314)
Net |  | 54,249 | 57,111
Trademarks and trade names |  |  |
Other intangible assets |  |  |
Gross |  | 8,465 | 8,177
Accumulated Amortization |  | (4,311) | (4,124)
Net |  | 4,154 | 4,053
Other |  |  |
Other intangible assets |  |  |
Gross |  | 16,978 | 16,775
Accumulated Amortization |  | (6,564) | (5,628)
Net |  | 10,414 | 11,147
Other intangible assets |  |  |
Other intangible assets |  |  |
Gross |  | 108,201 | 104,747
Accumulated Amortization |  | (38,755) | (30,456)
Net |  | 69,446 | 74,291
Client relationships |  |  |
Other intangible assets |  |  |
Gross |  | 518,555 | 519,123
Accumulated Amortization |  | (219,207) | (198,966)
Net |  | 299,348 | $ 320,157
Client relationships | CDMO Business | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |
Other intangible assets |  |  |
Decrease in intangible assets resulting from divestiture of business |  | $ 16,800 |

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