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Property and Equipment | 6 Months Ended
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Jun. 30, 2018
Property Plant And Equipment [Abstract] |
Property and Equipment | 4. Property and Equipment Property and equipment consist of the following (in thousands):
|  | Estimated Useful Life (Years) |  |  | June 30, 2018 |  |  | December 31, 2017 |
Land |  |  | — |  |  | $ | 875 |  |  | $ | 875 |
Buildings |  | 39-40 |  |  |  | 17,389 |  |  |  | 17,389 |
Building improvements |  | 5-40 |  |  |  | 34,957 |  |  |  | 34,957 |
Machinery and equipment |  | 3-15 |  |  |  | 62,681 |  |  |  | 62,681 |
Furniture, fixtures and office equipment |  | 5-10 |  |  |  | 3,106 |  |  |  | 3,556 |
Computer equipment and software |  |  | 3 |  |  |  | 8,416 |  |  |  | 8,416 |
|  |  |  |  |  |  | 127,424 |  |  |  | 127,874 |
Less accumulated depreciation |  |  |  |  |  |  | (101,388 | ) |  |  | (100,952 | )
Total property and equipment, net |  |  |  |  |  | $ | 26,036 |  |  | $ | 26,922 |
Depreciation expense related to property and equipment for the three and six months ended June 30, 2018 and 2017 was as follows (in thousands):
|  | For the Three Months Ended June 30, |  |  | For the Six Months Ended June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Depreciation Expense |  | $ | 445 |  |  | $ | 450 |  |  | $ | 886 |  |  | $ | 896 |
During the six months ended June 30, 2018, the Company disposed of $0.5 million of certain fully depreciated furniture, fixtures and office equipment which were no longer in service. Therefore, the cost and associated accumulated depreciation for these items were removed from the balance sheet.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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