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Intangible Assets | 12 Months Ended
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Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract] |
Intangible Assets |
6. | Intangible Assets
Intangible assets are related to certain capitalized milestone payments. The following table presents intangible assets (in thousands):
|  | December 31, |
|  | 2017 |  |  | 2016 |
Intangible assets |  | $ | 2,500 |  |  | $ | - |
Less accumulated amortization |  |  | (1,194 | ) |  |  | - |
Total |  | $ | 1,306 |  |  | $ | - |
We recorded $1.2 million in amortization expense related to intangible assets during the year ended December 31, 2017. See Note 10. At December 31, 2017, the intangible assets have an estimated remaining useful life of two months. The $1.3 million balance will be fully amortized during the first quarter of 2018. No impairment of intangible assets has been identified during 2017.

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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 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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