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Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Prepaid Expense and Other Assets, Current [Abstract] |  |
Prepaid clinical and research related expenses | $ 4,579 | $ 5,242
Prepaid insurance | 1,429 | 1,746
Other prepaid expenses | 1,721 | 1,515
Other receivable | 476 | 975
Prepaid expenses and other current assets | $ 8,205 | $ 9,478

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- Definition Amount of asset related to consideration paid in advance for Prepaid manufacturing of clinical materials that provides economic benefits within a future period of one year or the normal operating cycle, if longer. + References No definition available. + Details
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- Definition Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6387103&loc=d3e6435-108320 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123349782&loc=d3e5879-108316 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6787-107765 + Details
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