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3. Trading Securities (Tables) | 12 Months Ended
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Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Schedule of short-term investments |
|  | Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
|  | (In thousands) |
Security Type |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading securities - debt |  | $ | 93,712 |  |  | $ | 143 |  |  | $ | (12 | ) |  | $ | 93,843 |
Trading securities - equity |  |  | 17,674 |  |  |  | 211 |  |  |  | (745 | ) |  |  | 17,140 |
|  | $ | 111,386 |  |  | $ | 354 |  |  | $ | (757 | ) |  | $ | 110,983 |
December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading securities - debt |  | $ | 33,643 |  |  | $ | 18 |  |  | $ | (19 | ) |  | $ | 33,642 |
Trading securities - equity |  |  | 3,389 |  |  |  | 27 |  |  |  | (404 | ) |  |  | 3,012 |
|  | $ | 37,032 |  |  | $ | 45 |  |  | $ | (423 | ) |  | $ | 36,654 |

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
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