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Investments in Non-Marketable Securities (Tables)
3 Months Ended
Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
Carrying Value of Non-marketable Equity Securities
The following table presents the carrying value of our non-marketable equity securities (in thousands):
 March 31, 2022December 31, 2021
MAI$12,713 $12,713 
seqWell5,000 — 
Arzeda1,289 1,289 
Total non-marketable equity securities$19,002 $14,002