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Intangible Assets | 3 Months Ended
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Mar. 31, 2014
Business Combinations [Abstract] |
Intangible Assets | Intangible Assets Intangible assets as of March 31, 2014 and December 31, 2013 consisted of the following:
| Estimated useful lives |  | March 31, 2014 |  | December 31, 2013
Tradename | 7 years |  | $ | 435 |  |  | $ | 435 |
Patents and technological know-how | 10 years |  | 5,310 |  |  | 2,070 |
Proprietary software | 3 to 15 years |  | 2,961 |  |  | 2,961 |
Other | 5 years |  | 238 |  |  | 208 |
|  |  | 8,944 |  |  | 5,674 |
Accumulated amortization |  |  | (2,128 | ) |  | (1,964 | )
|  |  | $ | 6,816 |  |  | $ | 3,710 |
The amortization of intangible assets for the three months ended March 31, 2014 and March 31, 2013 was as follows:
| Three months ended March 31,
| 2014 |  | 2013
Amortization of intangible assets | $ | 164 |  |  | $ | 143 |
The estimated future amortization expense of intangible assets is as follows:
Years ending December 31, |
2014 (remainder) | $ | 665 |
2015 | 847 |
2016 | 810 |
2017 | 721 |
2018 | 700 |
Thereafter | 3,073 |
| $ | 6,816 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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