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3. Trading Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cost | $ 111,386 | $ 37,032
Gross unrealized gain | 354 | 45
Gross unrealized loss | (757) | (423)
Fair value | 11,093 | 36,654
Trading securities - Debt [Member] |  |
Cost | 93,712 | 33,643
Gross unrealized gain | 143 | 18
Gross unrealized loss | (12) | (19)
Fair value | 93,843 | 33,642
Trading securities - Equity [Member] |  |
Cost | 17,674 | 3,389
Gross unrealized gain | 211 | 27
Gross unrealized loss | (745) | (404)
Fair value | $ 17,140 | $ 3,012

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