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v3.20.4

Short Term Investments (Tables) | 12 Months Ended
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Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract] |
Available for sale investments |
| December 31, 2020 | December 31, 2019
| Fair Value | Cost | Accumulated unrealized holding gains | Fair Value | Cost | Accumulated unrealized holding gains
Short-term investments | $ | 111,946 |  | $ | 20,419 |  | $ | 91,527 |  | $ | 117,776 |  | $ | 36,826 |  | $ | 80,950 |

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