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Note 4 - Property and Equipment | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] |
4. | PROPERTY AND EQUIPMENT
A summary of property and equipment, at cost, as of December 31, 2018 and 2017 is as follows:
(in thousands) |  | Estimated Useful Lives |  |  | 2018 |  |  | 2017 |
Revenue equipment |  |  | 3-10 years |  |  | $ | 504,192 |  |  | $ | 519,797 |
Communications equipment |  |  | 5-10 years |  |  |  | 3,850 |  |  |  | 4,585 |
Land and improvements |  |  | 0-15 years |  |  |  | 25,240 |  |  |  | 25,061 |
Buildings and leasehold improvements |  |  | 7-40 years |  |  |  | 75,134 |  |  |  | 74,513 |
Construction in-progress |  |  | - |  |  |  | 3,121 |  |  |  | 2,023 |
Other |  |  | 2-10 years |  |  |  | 27,233 |  |  |  | 25,009 |
|  |  |  |  |  | $ | 638,770 |  |  | $ | 650,988 |
Depreciation expense was $74.4 million , $72.4 million , and $71.4 million , in 2018 , 2017 , and 2016 , respectively. This depreciation expense excludes net losses on the sale of property and equipment totaling $0.3 million , $4.0 million , and $0.8 million in 2018 , 2017 , and 2016 , respectively, which are presented net of gains on sale in depreciation and amortization expense in the consolidated statements of operations. We lease certain revenue equipment under capital leases with terms of approximately 60 to 84 months. At December 31, 2018 and 2017 , property and equipment included capitalized leases, which had capitalized costs of $55.4 million and $30.5 million and accumulated amortization of $15.6 million and $5.4 million , respectively. Amortization of these leased assets is included in depreciation and amortization expense in the consolidated statement of operations and totaled $5.4 million , $2.6 million , and $1.6 million during 2018 , 2017 , and 2016 , respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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