Stockholders' Equity - Reserved Common Stock (Details)	Sep. 30, 2020 shares
Class of Stock [Line Items]
Common stock reserved for issuance (in shares)	5,057,986
Warrant
Class of Stock [Line Items]
Common stock reserved for issuance (in shares)	15,461
Stock options
Class of Stock [Line Items]
Common stock reserved for issuance (in shares)	5,042,525