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Schedule of Estimated Fair Value of Financial Instrument (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Cost | $ 32,008 | $ 5,297
Unrealized gains |  |
Unrealized losses | (29) |
Fair value | 31,979 | 5,297
Accounts Payable [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
[custom:AvailableForSalesDebtSecuritiesAmortizedCostBasis-0] | (8,189) |
Cash and Cash Equivalents [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Cost | 8,968 | 5,297
Unrealized gains |  |
Unrealized losses |  |
Fair value | 8,968 | 5,297
Short-Term Investments [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Cost | 23,040 |
Unrealized gains |  |
Unrealized losses | (29) |
Fair value | $ 23,011 |

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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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