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Early Option Exercise Liability (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Disclosure Of Early Option Exercise Liability [Abstract] |  |
Early option exercise liability | $ 38 | $ 79
Number of unvested shares in which early option was exercised | 8,767 | 29,041

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- Definition Disclosure of early option exercise liability [Abstract]. + References No definition available. + Details
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- Definition Early option exercise liability. + References No definition available. + Details
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Balance Type: | credit
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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