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Operating Property (Tables) | 12 Months Ended
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Dec. 30, 2017
Schedule of Operating Property | Operating property is summarized as follows (in thousands):
|  | Dec. 30, 2017 |  |  | Dec. 31, 2016 |
Land |  | $ | 15,259 |  |  | $ | 15,259 |
Buildings and improvements |  |  | 57,758 |  |  |  | 56,413 |
Trailing equipment |  |  | 363,377 |  |  |  | 342,813 |
Other equipment |  |  | 58,317 |  |  |  | 48,732 |
Total operating property, gross |  |  | 494,711 |  |  |  | 463,217 |
Less accumulated depreciation and amortization |  |  | 218,700 |  |  |  | 190,374 |
Total operating property, net |  | $ | 276,011 |  |  | $ | 272,843 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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