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Schedule of Fair Value Hierarchy Financial Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | $ 25,753 | $ 28,495
Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | 6,299 | 5,484
Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | 19,454 | 23,011
Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets |  |
Money Market Funds [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | 6,299 | 5,484
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | 6,299 | 5,484
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets |  |
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets |  |
Corporate Notes and Commercial Paper [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | 19,454 | 23,011
Corporate Notes and Commercial Paper [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets |  |
Corporate Notes and Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets | 19,454 | 23,011
Corporate Notes and Commercial Paper [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] |  |
Total financial assets |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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