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Other Assets (Tables) | 12 Months Ended
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Dec. 31, 2012
Other Assets [Abstract] |
Schedule of Other Assets |
December 31, |  | 2012 |  |  | 2011 |
Patents, at cost |  | $ | 5,021 |  |  | $ | 4,900 |
Accumulated amortization |  |  | (2,826 | ) |  |  | (2,583 | )
Deposits on capital items |  |  | 3,934 |  |  |  | 1,618 |
Software development costs, at cost |  |  | 2,057 |  |  |  | 2,057 |
Accumulated amortization |  |  | (498 | ) |  |  | (146 | )
Investment in equity securities, carried at cost |  |  | 125 |  |  |  | 969 |
Investment in equity securities, equity method |  |  | 1,206 |  |  |  | - |
Other |  |  | 549 |  |  |  | 474 |
|  | $ | 9,568 |  |  | $ | 7,289 |

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