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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Dec. 31, 2017
FAIR VALUE MEASUREMENTS |
Schedule of cash and marketable securities fair value using hierarchy |
|  | December 31, 2017 |
|  | Adjusted Cost |  | Unrealized Gains (Losses) |  | Fair Value |  | Cash & Cash Equivalents |
|  |  | (in thousands) |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | — |  | $ | — |  | $ | — |  | $ | 7,772 |
Restricted cash |  |  | — |  |  | — |  |  | — |  |  | 5 |
Total |  | $ | — |  | $ | — |  | $ | — |  | $ | 7,777 |
|  | December 31, 2016 |
|  | Adjusted Cost |  | Unrealized Gains (Losses) |  | Fair Value |  | Cash & Cash Equivalents |
|  |  | (in thousands) |
Level 1: |  |  |  |  |  |  |  |  |  |  |  |  |
Cash |  | $ | — |  | $ | — |  | $ | — |  | $ | 6,009 |
Restricted cash |  |  | — |  |  | — |  |  | — |  |  | 5 |
Total |  | $ | — |  | $ | — |  | $ | — |  | $ | 6,014 |

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- Definition Tabular disclosure of assets measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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