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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES : Changes to fair value measurement Level 3 (Details) - Liability [Member] - Fair Value, Inputs, Level 3 [Member] - Fair Value, Recurring [Member] - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Series A Embedded Derivative Liability [Member] |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |
Fair value ending balance | $ 29,513 | $ 17,974
Issuance of Series B warrants | 0 |
Remeasurement to fair value | 11,539 |
Series B Warrants Liability [Member] |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |
Fair value ending balance | 58,290 | $ 0
Issuance of Series B warrants | 4,600 |
Remeasurement to fair value | $ 53,690 |

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