Summary of Significant Accounting Policies - Reverse Stock Split (Details)	Oct. 28, 2019 shares
Summary of Significant Accounting Policies
Reverse stock split ratio	0.04
Number of shares are combined into one share	25
Number of fractional shares issued	0

Number of fractional shares issued as a result of reverse stock splits.

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- References

No definition available.

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- Definition

Reduction in the number of shares during the period as a result of a reverse stock split.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

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