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v3.20.2

Acquisitions and Long-Lived Assets - Expedited Freight Acquisitions (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 21, 2019 USD ($) | Sep. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Jan. 12, 2020 USD ($) | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Payments on earn-out liability |  |  |  | $ 5,284 | $ 0 |  |
Change in fair value of earn-out liability |  |  |  | (2,209) | $ 890 |  |
Linn Star [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Business Acquisition, Cash Paid |  |  |  |  |  | $ 57,239 |
Number of additional locations |  |  |  |  |  | 20 |
FSA [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Business Acquisition, Cash Paid | $ 27,000 |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | $ 15,000 | $ 4,277 |  | $ 4,277 |  |  |
Period of years which earnout is calculated | 2 years |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Current | $ 11,803 |  |  |  |  |  |
Payments on earn-out liability |  |  | $ 5,284 |  |  |  |
Change in fair value of earn-out liability |  | $ 493 |  |  |  |  |
Risk Free Interest Rate [Member] | FSA [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input Percentage | 2.90% | 2.00% |  | 2.00% |  |  | 2.20%
Revenue Discount Rate [Member] | FSA [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input Percentage | 4.40% | 3.20% |  | 3.20% |  |  | 4.40%
Revenue Volatility [Member] | FSA [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability, Measurement Input Percentage | 3.00% | 7.00% |  | 7.00% |  |  | 5.00%

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