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Note 3 - Business Combinations, Goodwill and Intangible Assets | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Business Combinations, Goodwill and Intangibles Disclosure [Text Block] | 3. Business Combinations, Goodwill and Intangible Assets Goodwill impairment There was a decrease in goodwill of $12,724 during 2017 due to the impairment of goodwill. During the third quarter ended September 30, 2017, there was a decrease in the Company’s market capitalization which was determined to be a triggering event for potential goodwill impairment. Accordingly, the Company performed a goodwill impairment analysis. The Company utilized the market capitalization to estimate the fair value. Our total stockholders’ equity exceeded the estimated fair value. The failure of step one of the goodwill impairment test triggered a step two impairment test. As a result of step two of the impairment test, the Company determined the implied fair value of goodwill and concluded that the carrying value of goodwill exceeded its implied fair value as of September 30, 2017. Accordingly, an impairment charge of $12,724, which represents a full impairment charge, was recognized in the third quarter ended September 30, 2017. There were no such impairment charges during the year ended December 31, 2018. Intangible Assets Intangible assets as of December 31, 2018, and 2017 consisted of the following:
|  | Estimated useful lives |  |  | As of December 31, |
|  | (in years) |  |  | 201 8 |  |  | 201 7 |
Tradename |  |  | 5 | to | 7 |  |  | $ | 555 |  |  | $ | 555 |
Patents and technological know-how |  |  |  | 10 |  |  |  |  | 13,377 |  |  |  | 8,578 |
Proprietary software |  |  | 3 | to | 15 |  |  |  | 2,981 |  |  |  | 2,981 |
Other |  |  | 3 | to | 5 |  |  |  | 323 |  |  |  | 323 |
Total intangible assets, gross |  |  |  |  |  |  |  |  | 17,236 |  |  |  | 12,437 |
Accumulated amortization |  |  |  |  |  |  |  |  | (6,987 | ) |  |  | (5,894 | )
Total intangible assets, net |  |  |  |  |  |  |  | $ | 10,249 |  |  | $ | 6,543 |
Intangible assets includes capitalized legal expenses, net of amortization of $6,627 million related to our defense of patents from infringement by our competitors. Legal expenses have been capitalized upon satisfaction of two conditions: (a) a determination being made that a successful defense of this litigation is probable, and (b) that the monetary benefits arising out of such successful defense will be in excess of the costs for the defense. Please refer to Note 8 - Commitments and Contingencies for additional information. During the years ended December 31, 2018 and 2017, amortization of these intangible assets were $1,093 and $932 respectively. The estimated future amortization expense of intangible assets is as follows:
Years ending December 31, |  |  |  |
2019 |  | $ | 1,226 |
2020 |  |  | 1,048 |
2021 |  |  | 1,048 |
2022 |  |  | 1,048 |
2023 |  |  | 866 |
Thereafter |  |  | 5,013 |
Total |  | $ | 10,249 |

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