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GOODWILL AND INTANGIBLE ASSETS (Intangible) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Finite-lived intangible assets |  |  |
Weighted Average Amortization Period | 13 years |  |
Cost | $ 56,453 | $ 48,474 |
Accumulated Amortization | 14,788 | 10,787 |
Net Value | 41,665 | 37,687 |
Indefinite-lived intangible assets |  |  |
Net Value | 35,122 | 35,122 |
Total intangible assets |  |  |
Cost | 91,575 | 83,596 |
Net Value | 76,787 | 72,809 |
Amortization expense on intangible assets |  |  |
Intangible amortization expense | 4,002 | 4,352 | $ 4,174
Impairment of indefinite-lived intangible assets | 0 | 0 |
Minimum |  |  |
Amortization expense on intangible assets |  |  |
Annual amortization expense on intangible assets expected for future years | 4,000 |  |
Maximum |  |  |
Amortization expense on intangible assets |  |  |
Annual amortization expense on intangible assets expected for future years | 4,200 |  |
Trade name |  |  |
Indefinite-lived intangible assets |  |  |
Net Value | 32,300 | 32,300 |
Other |  |  |
Indefinite-lived intangible assets |  |  |
Net Value | $ 2,822 | 2,822 |
Customer relationships |  |  |
Finite-lived intangible assets |  |  |
Weighted Average Amortization Period | 13 years |  |
Cost | $ 52,221 | 44,242 |
Accumulated Amortization | 11,331 | 7,971 |
Net Value | 40,890 | 36,271 |
Customer relationships | Transportation Management (ABF Logistics) | Bear Transportation Services, L.P. |  |  |
Finite-lived intangible assets |  |  |
Cost | $ 7,300 |  |
Driver network |  |  |
Finite-lived intangible assets |  |  |
Weighted Average Amortization Period | 3 years |  |
Cost | $ 3,200 | 3,200 |
Accumulated Amortization | $ 3,200 | 2,711 |
Net Value |  | 489 |
Other |  |  |
Finite-lived intangible assets |  |  |
Weighted Average Amortization Period | 8 years |  |
Cost | $ 1,032 | 1,032 |
Accumulated Amortization | 257 | 105 |
Net Value | $ 775 | $ 927 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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