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Property, Plant and Equipment | 12 Months Ended
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Dec. 31, 2017
Property Plant And Equipment [Abstract] |
Property, Plant and Equipment | (1) 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 |  |  |
For the years ended December 31, 2017, 2016, and 2015, the Company’s aggregate depreciation expense related to property and equipment was $8,154, $8,307, and $8,953, respectively. For the years ended December 31, 2017, 2016, and 2015, the Company eliminated from assets and accumulated depreciation $6,317, $16,652 and $549 of fully depreciated assets, 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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