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INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2018
INVESTMENTS |
Summary of investment portfolio |
|  |  |  |  |  |  |  |  |  |  |  |  |  | Other |  |  |  |  |
|  | Opening |  | Additions |  | Net gains |  | Disposals |  | comprehensive |  | Unrealized |  | Fair value
|  | balance |  | during |  | (loss) on |  | during |  | (loss) income |  | gains (loss) on |  | end of the
As of December 31, 2018 |  | (January 1) |  | year |  | securities sold |  | year |  | (pre-tax) |  | securities held |  | year
Marketable equity securities |  | $ | 6,404 |  | $ | 1,882 |  | $ | (767) |  | $ | (2,895) |  | $ | — |  | $ | (1,906) |  | $ | 2,718
Warrants |  |  | 1,567 |  |  | 201 |  |  | — |  |  | (704) |  |  | — |  |  | (651) |  |  | 413
Investments |  | $ | 7,971 |  | $ | 2,083 |  | $ | (767) |  | $ | (3,599) |  | $ | — |  | $ | (2,557) |  | $ | 3,131
|  |  |  |  |  |  |  |  |  |  |  |  | Other |  |  |  |  |
|  | Opening |  | Additions |  | Realized |  | Disposals |  | comprehensive |  | Unrealized |  | Fair value
|  | balance |  | during |  | (loss) |  | during |  | (loss) income |  | (loss) gain |  | end of the
As of December 31, 2017 |  | (January 1) |  | year |  | gain |  | year |  | (pre-tax) |  | & OTTI |  | year
Marketable equity securities |  | $ | 6,749 |  | $ | — |  | $ | 840 |  | $ | (2,163) |  | $ | 1,334 |  | $ | (356) |  | $ | 6,404
Warrants |  |  | 1,794 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (227) |  |  | 1,567
Investments |  | $ | 8,543 |  | $ | — |  | $ | 840 |  | $ | (2,163) |  | $ | 1,334 |  | $ | (583) |  | $ | 7,971

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- Definition A tabular disclosure of the investment portfolio, which consists of the marketable securities and warrants. + References No definition available. + Details
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- References No definition available. + Details
Name: | us-gaap_InvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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