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Equity Incentive Plans - Narrative (Details)
$ / shares in Units, $ in Millions
9 Months Ended
Sep. 30, 2022
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation benefits | $ $ 0.2
Board of directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Issuance of common stock for services (in shares) | shares 700,000
ESPP shares issuable  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Issuance of common stock under employee stock purchase plan (in shares) | shares 300,000
Purchase price (in dollars per share) | $ / shares $ 0.63
Proceeds from ESPP | $ $ 0.2