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Investments (Tables) | 12 Months Ended
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Dec. 31, 2022
Investment [Line Items] |
Investments | The following table sets forth the Company’s investments:
|  | December 31, 2022 |  | December 31, 2021
|  | Carrying Value |  | Cost |  | Carrying Value |  | Cost
Securrency, Inc.—Series A convertible preferred stock |  | $ | 8,488 |  |  | $ | 8,112 |  |  | $ | 8,488 |  |  | $ | 8,112 |
Securrency, Inc.—Series B convertible preferred stock |  |  | 5,500 |  |  |  | 5,500 |  |  |  | 5,500 |  |  |  | 5,500 |
Securrency, Inc.—convertible note |  |  | 14,500 |  |  |  | 15,000 |  |  |  | — |  |  |  | — |
Subtotal—Securrency, Inc. |  | $ | 28,488 |  |  | $ | 28,612 |  |  | $ | 13,988 |  |  | $ | 13,612 |
Fnality International Limited—convertible note |  |  | 6,921 |  |  |  | 6,863 |  |  |  | — |  |  |  | — |
Other investments |  |  | 312 |  |  |  | 250 |  |  |  | 250 |  |  |  | 250 |
|  | $ | 35,721 |  |  | $ | 35,725 |  |  | $ | 14,238 |  |  | $ | 13,862 |
Summary of Inputs Used in Backsolve Valuation Approach of Investment in currency | The table below presents the inputs used in the 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 |
Securrency Convertible Note [Member] |
Investment [Line Items] |
Summary of Inputs Used in PWERM Approach of Investment | The table below presents the probability ascribed to potential outcomes used in the PWERM (classified as Level 3 in the fair value hierarchy) and the time to exit:
|  | December 31, 2022 |
Conversion of note upon a future equity financing |  |  | 60% |
Redemption of note upon a corporate transaction |  |  | 25% |
Default |  |  | 15% |
Time to potential outcome (in years) |  |  | 0.33 |
Fnality Convertible Note [Member] |
Investment [Line Items] |
Summary of Inputs Used in PWERM Approach of Investment | The table below presents the probability ascribed to potential outcomes used in the PWERM (classified as Level 3 in the fair value hierarchy) and the time to exit:
|  | December 31, 2022 |
Conversion of note upon a future financing round |  |  | 85% |
Redemption of note upon a change of control |  |  | 10% |
Default |  |  | 5% |
Time to potential outcome (in years) |  |  | 0.25 |

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