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Acquisition Activities (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jan. 03, 2019 | Mar. 30, 2019 | Sep. 28, 2019 | Sep. 29, 2018 | Dec. 31, 2018
Acquisition Activities [Abstract] |  |  |  |  |
Acquisition of business, net of cash acquired |  |  | $ 11,862 | $ 14,880 |
Goodwill related to acquisitions |  |  | $ 150,309 |  | $ 147,480
Bi-Metallix [Member] |  |  |  |  |
Acquisition Activities [Abstract] |  |  |  |  |
Purchase price of businesses | $ 11,862 |  |  |  |
Finite-lived Intangible Assets Acquired | 2,900 |  |  |  |
Goodwill related to acquisitions | $ 3,324 |  |  |  |
Business Acquisition, Name of Acquired Entity | Bi-Metallix, Inc. |  |  |  |
Business Acquisition, Effective Date of Acquisition |  | Jan. 03, 2019 |  |  |

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