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Capitalization - Warrants (Details) - Common stock - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Debt Instrument, Redemption, Period One [Member]
Warrants
Warrant shares (in shares)	7,030	7,030
Exercise price (in dollars per share)	$ 128.00	$ 128.00
Debt Instrument, Redemption, Period Five [Member]
Warrants
Warrant shares (in shares)	130	130
Exercise price (in dollars per share)	$ 2,520.00	$ 2,520.00

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Number of warrants or rights outstanding.

+ References

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

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