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Investments (Tables) | 9 Months Ended
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Sep. 30, 2021
Investment [Line Items] |
Investments | The following table sets forth the Company’s investments:
|  | September 30, 2021 |  |  | December 31, 2020 |
|  | Carrying Value |  |  | Cost |  |  | Carrying Value |  |  | Cost |
Securrency, Inc. – Series A convertible preferred stock |  | $ | 8,488 |  |  | $ | 8,112 |  |  | $ | 8,112 |  |  | $ | 8,112 |
Securrency, Inc. – Series B convertible preferred stock |  |  | 5,500 |  |  |  | 5,500 |  |  |  | — |  |  |  | — |
Subtotal – Securrency, Inc. |  | $ | 13,988 |  |  | $ | 13,612 |  |  | $ | 8,112 |  |  | $ | 8,112 |
Onramp Invest, LLC – Simple Agreement for Future Equity |  |  | 250 |  |  |  | 250 |  |  |  | — |  |  |  | — |
|  | $ | 14,238 |  |  | $ | 13,862 |  |  | $ | 8,112 |  |  | $ | 8,112 |
Summary of Inputs Used in Backsolve Valuation Approach of Investment in Securrency | The table below presents the inputs used in backsolve valuation approach (classified as Level 3 in the fair value hierarchy):
|  | Inputs |
|  | June 9, 2021 |  |  | March 8, 2021 |
Expected volatility |  |  | 50 | % |  |  | 55 | %
Time to exit (in years) |  |  | 4.75 |  |  |  | 5.00 |

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