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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES : Trading Securities (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Short-term Investments |  | $ 111,386
Available-for-sale Securities, Gross Unrealized Gain |  | 354
Available-for-sale Securities, Gross Unrealized Loss |  | (757)
Investment Owned, at Fair Value |  | 110,983
Trading Securitesr Equity [Member] |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Short-term Investments | $ 23,851 |
Trading Securites Equity [Member] |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Short-term Investments |  | 17,674
Available-for-sale Securities, Gross Unrealized Gain | 4,218 | 211
Available-for-sale Securities, Gross Unrealized Loss | (3,598) | (745)
Investment Owned, at Fair Value | $ 24,471 | 17,140
Trading Securites Debt [Member] |  |
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items] |  |
Short-term Investments |  | 93,712
Available-for-sale Securities, Gross Unrealized Gain |  | 143
Available-for-sale Securities, Gross Unrealized Loss |  | (12)
Investment Owned, at Fair Value |  | $ 93,843

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