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GOODWILL AND INTANGIBLE ASSETS (Intangible) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 13 years |  |
Cost | $ 64,793 |  | $ 64,793 |  | $ 56,453
Accumulated Amortization | 17,847 |  | 17,847 |  | 14,788
Net Value | 46,946 |  | 46,946 |  | 41,665
Indefinite-lived intangible assets |  |  |  |  |
Net Value | 35,122 |  | 35,122 |  | 35,122
Total intangible assets |  |  |  |  |
Cost | 99,915 |  | 99,915 |  | 91,575
Net Value | 82,068 |  | 82,068 |  | 76,787
Amortization expense on intangible assets |  |  |  |  |
Intangible amortization expense | 1,100 | $ 900 | 3,059 | $ 3,079 |
Minimum |  |  |  |  |
Amortization expense on intangible assets |  |  |  |  |
Approximate annual amortization expense on intangible assets expected for years 2016 - 2020 |  |  | 4,300 |  |
Maximum |  |  |  |  |
Amortization expense on intangible assets |  |  |  |  |
Approximate annual amortization expense on intangible assets expected for years 2016 - 2020 |  |  | 4,900 |  |
Trade name |  |  |  |  |
Indefinite-lived intangible assets |  |  |  |  |
Net Value | 32,300 |  | 32,300 |  | 32,300
Other |  |  |  |  |
Indefinite-lived intangible assets |  |  |  |  |
Net Value | 2,822 |  | $ 2,822 |  | 2,822
Customer relationships |  |  |  |  |
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 14 years |  |
Cost | 60,021 |  | $ 60,021 |  | 52,221
Accumulated Amortization | 14,248 |  | 14,248 |  | 11,331
Net Value | 45,773 |  | 45,773 |  | 40,890
Customer relationships | Transportation Management (ABF Logistics) | LDS |  |  |  |  |
Finite-lived intangible assets |  |  |  |  |
Cost | 7,300 |  | $ 7,300 |  |
Driver network |  |  |  |  |
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 3 years |  |
Cost | 3,200 |  | $ 3,200 |  | 3,200
Accumulated Amortization | 3,200 |  | $ 3,200 |  | 3,200
Other |  |  |  |  |
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 6 years |  |
Cost | 1,572 |  | $ 1,572 |  | 1,032
Accumulated Amortization | 399 |  | 399 |  | 257
Net Value | $ 1,173 |  | $ 1,173 |  | $ 775

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