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Intangibles (Tables) | 12 Months Ended
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Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract] |
Components of Intangible Assets | The components of intangible assets were as follows:
|  | December 31, 2018 |  |  | December 31, 2017 |
|  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |  |  | Gross Carrying |  |  | Accumulated |  |  | Net Carrying |
|  | Value |  |  | Amortization |  |  | Value |  |  | Value |  |  | Amortization |  |  | Value |
License Agreements |  | $ | 3,117 |  |  | $ | (807 | ) |  | $ | 2,310 |  |  | $ | 3,117 |  |  | $ | (585 | ) |  | $ | 2,532 |
Estimated Future Amortization Expense Related to Intangible Assets | The following table outlines the estimated future amortization expense related to intangible assets held as of December 31, 2018:
Year Ending December 31, |  |  |  |
2019 |  |  | 223 |
2020 |  |  | 223 |
2021 |  |  | 223 |
2022 |  |  | 223 |
Thereafter |  |  | 1,418 |
Total |  | $ | 2,310 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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