Annual report pursuant to Section 13 and 15(d)

Balance Sheet Details - Prepaid and Other Current Assets (Details)

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Balance Sheet Details - Prepaid and Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]    
Prepaid expenses $ 12,194 $ 7,674
Other receivables 0 32,762
Other current assets 9,806 6,985
Prepaid expenses and other current assets $ 22,000 47,421
Other receivables - transition services agreement   28,400
Other receivables, asset purchase agreement   $ 4,400