The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

Name:	us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Going Concern - Additional Information (Details) - Common Stock - Subsequent Event - USD ($) $ in Millions	Oct. 30, 2020	Oct. 23, 2020
Public Offering Purchase Agreement
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross proceeds from public offering of common stock		$ 18.0
Registered Offering Purchase Agreement
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross proceeds from public offering of common stock	$ 6.2