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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2022
Accounting Policies [Abstract] |
Schedule of Changes in Deferred Commissions | Changes in deferred commissions for the years ended December 31, 2022 and 2021 are as follows:
| 2022 |  | 2021
Balance, beginning of the year | $ | 148 |  |  | $ | 210 |
Deferral of commissions earned | 55 |  |  | 73 |
Recognition of commission expense | (67) |  |  | (135) |
Balance, end of the year | $ | 136 |  |  | $ | 148 |
Schedule of Concentration Risk | The following table sets forth our concentration of accounts receivable, net of specific allowances for doubtful accounts.
| December 31,
| 2022 |  | 2021
Customer A | 23 | % |  | — | %
Customer B | 7 | % |  | 20 | %
Customer C | 5 | % |  | 18 | %
Schedule of Accounts Receivable | Accounts receivable consisted of the following:
| December 31,
| 2022 |  | 2021
Accounts receivable | $ | 1,156 |  |  | $ | 977 |
Less allowances for doubtful accounts | (198) |  |  | (10) |
Accounts receivable, net | $ | 958 |  |  | $ | 967 |
Changes in Allowance for Doubtful Accounts | Changes in the allowance for doubtful accounts are as follows:
| December 31,
| 2022 |  | 2021
Balance, beginning of year | $ | 10 |  |  | $ | 356 |
Provision for doubtful accounts, net of recoveries | 198 |  |  | (286) |
Write offs | (10) |  |  | (60) |
Balance, end of year | $ | 198 |  |  | $ | 10 |
Schedule of Digital Assets | The following table sets forth our digital asset holdings as of December 31, 2022:
Asset | Gross Carrying Amount |  | Accumulated Digital Asset Impairment |  | Digital Asset Carrying Value |  |  |  |
Bitcoin | $ | 34,994 |  |  | $ | (25,534) |  |  | $ | 9,460 |  |  |  |  |
Ether | 1,506 |  |  | (1,156) |  |  | 350 |  |  |  |  |
Other | 1,237 |  |  | (910) |  |  | 327 |  |  |  |  |
Total | $ | 37,737 |  |  | $ | (27,600) |  |  | $ | 10,137 |  |  |  |  |
The following table sets forth our digital asset holdings as of December 31, 2021:
Asset | Gross Carrying Amount |  | Accumulated Digital Asset Impairment |  | Digital Asset Carrying Value |  |  |  |
Bitcoin | $ | 36,963 |  |  | $ | (8,554) |  |  | $ | 28,409 |  |  |  |  |
Ethereum | 4,714 |  |  | (670) |  |  | 4,044 |  |  |  |  |
Other | 287 |  |  | (159) |  |  | 128 |  |  |  |  |
Total | $ | 41,964 |  |  | $ | (9,383) |  |  | $ | 32,581 |  |  |  |  |
Gross carrying amount and accumulated digital asset impairment noted above represent carrying amount and impairment, respectively, on the remaining cost lots as of the respective dates. Changes in our digital asset holdings for the year ended December 31, 2022 were as follows:
| Bitcoin |  | Ethereum |  | Other |  | Total |  |  |  |
Net balance at December 31, 2021 | $ | 28,409 |  |  | $ | 4,044 |  |  | $ | 128 |  |  | $ | 32,581 |  |  |  |  |
Received from customers, net of expenses | 37 |  |  | 378 |  |  | 44 |  |  | 459 |  |  |  |  |
Purchases of digital assets | 923 |  |  | — |  |  | — |  |  | 923 |  |  |  |  |
Exchanges of digital assets | — |  |  | (906) |  |  | 906 |  |  | — |  |  |  |  |
Disposal proceeds | (796) |  |  | (486) |  |  | — |  |  | (1,282) |  |  |  |  |
Gain on sale of digital assets | 69 |  |  | 298 |  |  | — |  |  | 367 |  |  |  |  |
Impairment expense | (19,182) |  |  | (2,978) |  |  | (751) |  |  | (22,911) |  |  |  |  |
Net balance at December 31, 2022 | $ | 9,460 |  |  | $ | 350 |  |  | $ | 327 |  |  | $ | 10,137 |  |  |  |  |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The following table sets forth common stock equivalents that have been excluded from the computation of dilutive weighted average shares outstanding as their inclusion would have been anti-dilutive:
| December 31,
| 2022 |  | 2021
Warrants | 6,632,561 |  |  | 5,636,801 |
Options | 961,779 |  |  | 925,467 |
Restricted stock units | 2,957,995 |  |  | 3,576,270 |
Total | 10,552,335 |  | 10,138,538
Financial Instruments Measured at Fair Value | Our assets and liabilities measured at fair value on a recurring basis as of December 31, 2022 are set forth below:
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Liabilities: |  |  |  |  |  |  |
Warrant liability | $ | — |  |  | $ | 256 |  |  | $ | — |  |  | $ | 256 |
Total | $ | — |  |  | $ | 256 |  |  | $ | — |  |  | $ | 256 |
Our assets and liabilities measured at fair value on a recurring basis as of December 31, 2021 are set forth below:
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Liabilities: |  |  |  |  |  |  |
Warrant liability | $ | — |  |  | $ | 3,605 |  |  | $ | — |  |  | $ | 3,605 |
Total | $ | — |  |  | $ | 3,605 |  |  | $ | — |  |  | $ | 3,605 |

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