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ORGANIZATION AND DESCRIPTION OF THE BUSINESS AND FINANCIAL STATEMENT PRESENTATION (Acquisitions) (Details) - USD ($) $ in Thousands |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 29, 2017 | Dec. 30, 2016 | Sep. 02, 2016 | Jan. 31, 2019 | Jan. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Acquisitions |  |  |  |  |  |  |  |
Net cash consideration |  |  |  |  |  |  |  | $ 24,780
Divestitures |  |  |  |  |  |  |  |
Proceeds from sale of subsidiaries |  |  |  |  |  | $ 4,680 | $ 2,490 | $ 2,780
ArcBest |  |  |  |  |  |  |  |
Divestitures |  |  |  |  |  |  |  |
Value of divested subsidiaries | $ 5,200 | $ 4,800 |  |  |  |  |  |
Proceeds from sale of subsidiaries | 500 | 2,800 |  |  |  |  |  |
Contingent consideration | $ 4,700 | $ 2,000 |  |  |  |  |  |
LDS |  |  |  |  |  |  |  |
Acquisitions |  |  |  |  |  |  |  |
Paid from escrow |  |  |  |  | $ 3,500 |  |  |
LDS | Subsequent Event |  |  |  |  |  |  |  |
Acquisitions |  |  |  |  |  |  |  |
Paid from escrow |  |  |  | $ 4,500 |  |  |  |
LDS | ArcBest |  |  |  |  |  |  |  |
Acquisitions |  |  |  |  |  |  |  |
Total consideration |  |  | $ 25,000 |  |  |  |  |
Cash consideration |  |  | 17,000 |  |  |  |  |
Contingent consideration |  |  | $ 8,000 |  |  |  |  |
Contingent consideration period |  |  | 2 years |  |  |  |  |

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