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Other Balance Sheet Details - Inventory (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]    
Raw materials $ 1,301 $ 391
Work in process 2,387 243
Finished goods 1,804 392
Total 5,492 1,026
Inventory write-downs $ 0 $ 0