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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Impairment of goodwill | $ 0 |  | $ 294 |  |
Other current assets | 164 |  | 164 |  | $ 430
Depreciation expense | 100 | $ 100 | 100 | $ 100 |
Amortization expense for intangible assets | 300 | $ 0 | 600 | $ 0 |
Amortization expense, next twelve months | 1,200 |  | 1,200 |  |
Amortization expense, 2019 | 1,000 |  | 1,000 |  |
Amortization expense, 2020 | 1,000 |  | 1,000 |  |
Amortization expense, 2021 | 900 |  | 900 |  |
Amortization expense, 2022 | 900 |  | 900 |  |
Deferred revenue | $ 116 |  | $ 116 |  | $ 66
Securities not included in the computation of diluted net loss per share |  |  | 14,128,219 | 2,545,463 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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