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v3.22.4

Property and Equipment | 12 Months Ended
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Dec. 31, 2022
Property and Equipment |
Property and Equipment | 7. Property and Equipment Property and equipment consist of the following (dollars in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Estimated | ​ | ​ | ​ | ​ | ​ | ​ |
​ |  | Useful Lives |  | December 31, |
​ |  | in Years |  | 2022 |  | 2021 |
Land |  | — | ​ | $ | 6,792 | ​ | $ | 6,792 | ​
Transportation equipment |  | 1 - 7 | ​ |  | 153,587 | ​ |  | 132,792 | ​
Machinery and equipment |  | 1 - 20 | ​ |  | 56,357 | ​ |  | 48,000 | ​
Computer and telephone equipment |  | 1 - 10 | ​ |  | 23,551 | ​ |  | 23,065 | ​
Buildings and leasehold improvements |  | 1 - 40 | ​ |  | 80,275 | ​ |  | 74,981 | ​
Furniture and fixtures |  | 1 - 17 | ​ | ​ | 6,270 | ​ | ​ | 6,081 | ​
Construction in progress |  | — | ​ |  | 6,717 | ​ |  | 1,668 | ​
​ | ​ | ​ | ​ |  | 333,549 | ​ |  | 293,379 | ​
Less—Accumulated depreciation | ​ | ​ | ​ |  | (189,600) | ​ |  | (164,825) | ​
Property and equipment, net | ​ | ​ | ​ | $ | 143,949 | ​ | $ | 128,554 | ​
​ Depreciation expense for the years ended December 31, 2022, 2021 and 2020 was $33.6 million, $28.4 million and $27.9 million, 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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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