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Property, Plant and Equipment (Tables) | 12 Months Ended
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Dec. 31, 2017
Property Plant And Equipment [Abstract] |
Summary of Property, Plant and Equipment | Property, plant and equipment at December 31, 2017 and 2016 consist of the following:
|  | 2017 |  |  | 2016 |  |  | Estimated useful lives
Land |  | $ | 2,458 |  |  | $ | 2,458 |  |  |
Buildings and improvements |  |  | 16,678 |  |  |  | 15,515 |  |  | 10 to 30 years
Machinery and equipment |  |  | 107,722 |  |  |  | 102,146 |  |  | 3 to 15 years
Office furniture, fixtures and equipment |  |  | 4,925 |  |  |  | 5,016 |  |  | 3 to 10 years
Automotive equipment |  |  | 735 |  |  |  | 387 |  |  | 3 to 6 years
Construction in progress |  |  | 1,917 |  |  |  | 8,047 |  |  |
Total gross value |  |  | 134,435 |  |  |  | 133,569 |  |  |
Less accumulated depreciation |  |  | (85,114 | ) |  |  | (83,274 | ) |  |
Total net value |  | $ | 49,321 |  |  | $ | 50,295 |  |  |

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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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