Notes Payable - Schedule of Aggregate Carrying Amounts of Term Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Less: unamortized discount	$ (265)
Total	9,876
Line of Credit
Debt Instrument [Line Items]
Principal	10,000	$ 10,000
Add: accreted liability for Final Payment fee	141	35
Less: unamortized discount	(265)	(354)
Total	$ 9,876	$ 9,681

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant