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Secured Convertible Notes and Related Common Stock Purchase Warrants - Summary of Convertible Notes (Parenthetical) (Details)	9 Months Ended
	Sep. 30, 2018
June 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	75.00%
Debt instrument, maturity date	Dec. 04, 2018
June 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	25.00%
Debt instrument, maturity date	Dec. 04, 2019
July 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	75.00%
Debt instrument, maturity date	Jan. 20, 2019
July 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	25.00%
Debt instrument, maturity date	Jan. 20, 2020
August 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	75.00%
Debt instrument, maturity date	Mar. 01, 2019
August 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	25.00%
Debt instrument, maturity date	Mar. 01, 2020
September 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	75.00%
Debt instrument, maturity date	Mar. 21, 2019
September 2018 Convertible Note [Member] | Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt instrument, maturity percentage	25.00%
Debt instrument, maturity date	Mar. 21, 2020

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- Definition

Debt instrument, percentage of principal amount to be redeemed.

+ References

No definition available.

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- 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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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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