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Subsequent Event - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
	Apr. 21, 2020	Oct. 31, 2018
Subsequent Event [Line Items]
Units offered during the period		1,845,540
Exercise price of warrants		$ 6.00
Subsequent Event
Subsequent Event [Line Items]
Number of common stock sold	1,218,000
Sale of stock, price per share	$ 1.56
Net proceeds of the offering	$ 1.6
Exercise price of warrants	$ 2.40

X

- Definition

Number of capital units issued during the period in public offering.

+ References

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

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

+ References

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-SubTopic 10
-Section 45
-Paragraph 14
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- Definition

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

+ References

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- Definition

Number of new stock issued during the period.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Topic 505
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- 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.

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