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Property and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property and Equipment | 3. PROPERTY AND EQUIPMENT Property and equipment at December 31, 2023 and 2022 are as follows:
|  | 2023 |  |  | 2022 |
Land |  | $ | 9,348 |  |  | $ | 9,348 |
Buildings and improvements |  |  | 1,314 |  |  |  | 1,314 |
Furniture and fixtures |  |  | 20,090 |  |  |  | 19,986 |
Operating equipment |  |  | 1,068,628 |  |  |  | 991,574 |
Total property and equipment |  |  | 1,099,380 |  |  |  | 1,022,222 |
Accumulated depreciation |  |  | (484,772 | ) |  |  | (478,312 | )
Property and equipment — net |  | $ | 614,608 |  |  | $ | 543,910 |
Operating equipment of $2,227 and $500 was classified as held for sale, excluded from property and equipment, as of December 31, 2023 and 2022, respectively. Gain or loss on sale of assets, net includes $886 and $8,150 of loss related to the retirement of an asset which is classified as held for sale for the year ended December 31, 2023 and 2022, respectively. Depreciation expense was $42,525, $46,273 and $43,016, for the years ended December 31, 2023, 2022 and 2021, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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