v3.10.0.1

Fair Value Measurements - Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2018 | Mar. 31, 2018 | Sep. 29, 2018 | Sep. 30, 2017
Restructuring Reserve [Roll Forward] |  |  |  |
Contingent consideration liability recorded in connection with acquisition | $ 100 | $ 500 | $ 187 |
Change in fair value of contingent consideration |  |  | 257 | $ 0
Accretion of contingent consideration liability |  |  | 466 |
Fair Value, Measurements, Recurring |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Beginning balance - December 31, 2016 |  | 0 | 0 |
Ending balance - September 30, 2017 | 2,209 |  | 2,209 |
Level 3 | Fair Value, Measurements, Recurring |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Beginning balance - December 31, 2016 |  | $ 0 | 0 |
Change in fair value of contingent consideration |  |  | 257 |
Accretion of contingent consideration liability |  |  | 29 |
Ending balance - September 30, 2017 | $ 2,209 |  | 2,209 |
Town & Country Resources, Inc. | Level 3 | Fair Value, Measurements, Recurring |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Contingent consideration liability recorded in connection with acquisition |  |  | $ 1,923 |

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