Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Name:	us-gaap_CommonStockSharesIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Subsequent Events - Sale of Common Stock - Additional Information (Details) - USD ($)	Feb. 27, 2020	Mar. 31, 2020	Sep. 30, 2019	Dec. 31, 2018
Common stock, shares issued			7,199,696	2,258,530
Common Stock [Member] \| Subsequent Event [Member]
Common stock, shares issued	1,260,000	1,260,000
Aggregate gross proceeds pursuant to terms of subscription agreement	$ 3,200,000
Payments of underwriter discounts or commissions	$ 0
Sale of stock, description	the Company sold a total of 1,260,000 shares of its Common Stock to related parties for aggregate gross proceeds of $3.2 million pursuant to the terms of a subscription agreement. The Company did not pay any underwriter discounts or commissions in connection with the sale of the shares. The shares of Common Stock sold have the right to convert into securities which bear the same terms as those offered to satisfy the Liquidity Milestone defined in the Incremental Amendment.