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GOODWILL AND INTANGIBLE ASSETS (Tables) | 3 Months Ended
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Mar. 31, 2017
GOODWILL AND INTANGIBLE ASSETS |
Schedule of goodwill by reportable operating segment |
|  | Total |  | ArcBest |  | FleetNet |
|  | (in thousands)
Balances at December 31, 2016 |  | $ | 108,875 |  | $ | 108,245 |  | $ | 630 |
Purchase accounting adjustments(1) |  |  | 106 |  |  | 106 |  |  | — |
Balances at March 31, 2017 |  | $ | 108,981 |  | $ | 108,351 |  | $ | 630 |
| (1) |  | Goodwill related to the September 2, 2016 acquisition of LDS is based on preliminary information as of March 31, 2017.
Schedule of intangible assets |
|  |  |  | March 31, 2017 |  | December 31, 2016 |
|  | Weighted-Average |  |  |  |  | Accumulated |  | Net |  |  |  |  | Accumulated |  | Net |
|  | Amortization Period |  | Cost |  | Amortization |  | Value |  |  | Cost |  | Amortization |  | Value |
|  | (in years) |  | (in thousands) |  | (in thousands) |
Finite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships(1) |  | 14 |  | $ | 60,431 |  | $ | 16,450 |  | $ | 43,981 |  | $ | 60,431 |  | $ | 15,350 |  | $ | 45,081 |
Driver network |  | 3 |  |  | 3,200 |  |  | 3,200 |  |  | — |  |  | 3,200 |  |  | 3,200 |  |  | — |
Other |  | 9 |  |  | 1,032 |  |  | 442 |  |  | 590 |  |  | 1,032 |  |  | 406 |  |  | 626 |
|  | 13 |  |  | 64,663 |  |  | 20,092 |  |  | 44,571 |  |  | 64,663 |  |  | 18,956 |  |  | 45,707 |
Indefinite-lived intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade name |  | N/A |  |  | 32,300 |  |  | N/A |  |  | 32,300 |  |  | 32,300 |  |  | N/A |  |  | 32,300 |
Other |  | N/A |  |  | 2,500 |  |  | N/A |  |  | 2,500 |  |  | 2,500 |  |  | N/A |  |  | 2,500 |
|  |  |  |  | 34,800 |  |  |  |  |  | 34,800 |  |  | 34,800 |  |  |  |  |  | 34,800 |
Total intangible assets |  | N/A |  | $ | 99,463 |  | $ | 20,092 |  | $ | 79,371 |  | $ | 99,463 |  | $ | 18,956 |  | $ | 80,507 |
| (1) |  | Customer relationships of $7.7 million related to the September 2, 2016 acquisition of LDS is based on preliminary information as of March 31, 2017.
Schedule of future amortization for intangible assets and acquired software |
|  |  |  |  | Intangible |  | Acquired |
|  | Total |  | Assets |  | Software(1) |
|  | (in thousands) |
2017 |  | $ | 5,284 |  | $ | 3,402 |  | $ | 1,882 |
2018 |  |  | 6,654 |  |  | 4,520 |  |  | 2,134 |
2019 |  |  | 5,469 |  |  | 4,482 |  |  | 987 |
2020 |  |  | 4,471 |  |  | 4,454 |  |  | 17 |
2021 |  |  | 4,418 |  |  | 4,412 |  |  | 6 |
Thereafter |  |  | 23,301 |  |  | 23,301 |  |  | — |
Total amortization |  | $ | 49,597 |  | $ | 44,571 |  | $ | 5,026 |
| (1) |  | Acquired software is reported in property, plant and equipment.

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- Definition Tabular disclosure of intangibles assets, excluding goodwill, in total and by major class, including the gross carrying amount and accumulated amortization, if applicable. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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