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Other Assets (Tables) | 12 Months Ended
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Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of Other Assets | Other assets consist of the following:
December 31, |  | 2017 |  |  | 2016 |
Patents, at cost |  | $ | 6,814 |  |  | $ | 6,525 |
Accumulated amortization |  |  | (4,202 | ) |  |  | (3,915 | )
Deposits on capital items |  |  | 7,958 |  |  |  | 21,436 |
Other |  |  | 3,169 |  |  |  | 3,495 |
|  | $ | 13,739 |  |  | $ | 27,541 |

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- Definition Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets. + References No definition available. + Details
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