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v3.3.1.900

Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2015
Patents [Member] |
Schedule of Patent Cost and Other Asset | Patent costs, which are included in other assets in the accompanying balance sheets, as of December 31 were as follows (in thousands):
|  | 2015 |  |  | 2014 |
Patent costs |  | $ | 2,525 |  |  | $ | 2,721 |
Accumulated amortization |  |  | (1,583 | ) |  |  | (1,689 | )
|  | $ | 942 |  |  | $ | 1,032 |

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