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OPERATING SEGMENT DATA (Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
OPERATING SEGMENT DATA |  |  |
CAPITAL EXPENDITURES, GROSS | $ 149,951 | $ 151,637 | $ 159,017
DEPRECIATION AND AMORTIZATION EXPENSE | 103,068 | 103,053 | 93,042
Amortization of intangibles | 4,538 | 4,239 | 4,002
Operating Segments | Asset-Based |  |  |
OPERATING SEGMENT DATA |  |  |
CAPITAL EXPENDITURES, GROSS | 112,751 | 110,170 | 122,542
DEPRECIATION AND AMORTIZATION EXPENSE | 82,507 | 80,331 | 71,320
Assets acquired through notes payable and capital leases | 84,200 | 83,400 | 80,600
Operating Segments | ArcBest |  |  |
OPERATING SEGMENT DATA |  |  |
CAPITAL EXPENDITURES, GROSS | 9,823 | 6,154 | 24,219
DEPRECIATION AND AMORTIZATION EXPENSE | 13,090 | 13,612 | 12,886
Amortization of intangibles | 4,300 | 4,000 | 3,700
Operating Segments | FleetNet |  |  |
OPERATING SEGMENT DATA |  |  |
CAPITAL EXPENDITURES, GROSS | 1,089 | 403 | 1,007
DEPRECIATION AND AMORTIZATION EXPENSE | 1,089 | 1,210 | 1,119
Amortization of intangibles | 200 | 300 | 300
Other and eliminations |  |  |
OPERATING SEGMENT DATA |  |  |
CAPITAL EXPENDITURES, GROSS | 26,288 | 34,910 | 11,249
DEPRECIATION AND AMORTIZATION EXPENSE | $ 6,382 | $ 7,900 | $ 7,717

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