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Accumulated Other Comprehensive Income/(Loss) (Tables) | 12 Months Ended
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Dec. 31, 2018
Accumulated Other Comprehensive Income/(Loss). |
Reconciliation of accumulated other comprehensive income/(loss) |
|  |  |  |  | Accumulated |
|  | Accumulated |  | other comprehensive |
|  | other comprehensive |  | income/(loss), |
|  | income/(loss) |  | net of tax |
As of December 31, 2016 |  | $ | 15 |  | $ | 14 |
Other comprehensive gain due to change in fair market value of marketable securities during period |  |  | (17) |  |  | (14) |
As of December 31, 2017 |  | $ | (2) |  | $ | — |
Cumulative adjustment related to Accounting Standard Update 2016-01 |  |  | 2 |  |  |  |
As of January 1, 2018 |  | $ | — |  | $ | — |
As of December 31, 2018 |  | $ | — |  | $ | — |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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