Goodwill and Intangible Assets (Intangible Assets Acquired from Business Acquisitions) (Details) - USD ($) $ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
---|---|---|
Acquired Finite-Lived Intangible Assets [Line Items] | ||
Gross Carrying Amount | $ 64,007 | $ 84,658 |
Accumulated Amortization | (38,024) | (42,132) |
Total | 25,983 | 42,526 |
TL | ||
Acquired Finite-Lived Intangible Assets [Line Items] | ||
Gross Carrying Amount | 4,508 | 23,461 |
Accumulated Amortization | (3,980) | (11,820) |
Total | 528 | 11,641 |
LTL | ||
Acquired Finite-Lived Intangible Assets [Line Items] | ||
Gross Carrying Amount | 800 | 2,498 |
Accumulated Amortization | (800) | (1,925) |
Total | 0 | 573 |
Ascent TM | ||
Acquired Finite-Lived Intangible Assets [Line Items] | ||
Gross Carrying Amount | 27,152 | 27,152 |
Accumulated Amortization | (19,534) | (17,248) |
Total | 7,618 | 9,904 |
Ascent OD | ||
Acquired Finite-Lived Intangible Assets [Line Items] | ||
Gross Carrying Amount | 31,547 | 31,547 |
Accumulated Amortization | (13,710) | (11,139) |
Total | $ 17,837 | $ 20,408 |