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Common Stock (Tables)	3 Months Ended
Common Stock (Tables)	Mar. 31, 2022
Common Stock [Abstract]
Reserved Shares of Common Stock for Issuance	March 31, December 31, 2022 2021 Options issued and outstanding 20,274,077 21,387,909 Options available for future grants 6,727,691 7,209,538 Warrants issued and outstanding 1,928,020 1,928,020 28,929,788 30,525,467