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Subsequent Events (Details) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended
	Nov. 08, 2019	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Subsequent Event [Line Items]
Proceeds from issuance of common stock, net of issuance costs			$ 3,425,065	$ 14,923,263
Common stock | Sales Agreement
Subsequent Event [Line Items]
Proceeds from issuance of common stock, net of issuance costs		$ 1,100,000	$ 3,400,000		$ 29,200,000
Common stock | Sales Agreement | Subsequent Events
Subsequent Event [Line Items]
Number of common shares sold (in shares)	967,862
Proceeds from issuance of common stock, net of issuance costs	$ 2,400,000
Common shares sold (in dollars per share)	$ 2.49

X

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

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=118932676&loc=d3e3255-108585

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	duration

X

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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X

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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X

- Details

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Namespace Prefix:
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X

- Details

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