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- Definition

Class of Warrant or Right, Term

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- Definition

Convertible Preferred Stock, Conversion Price

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- Definition

Convertible Preferred Stock Issued Shares

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- Definition

Deemed Dividend On Beneficial Conversion Feature Of Convertible Preferred Stock

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- Definition

Dividend On Conversion Of Series A Convertible Preferred Stock, Most Favored Nation

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- Definition

Increase (Decrease) In Fair Value Of Warrant Liability

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- Definition

Warrants Issued Shares

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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.

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 235
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-Paragraph 1
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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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- Definition

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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- Definition

Value of convertible preferred stock that was converted to other securities.

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- Definition

Number of shares issued for each share of convertible preferred stock that is converted.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholder, which takes precedence over common stockholders in the event of liquidation and from issuance of rights to purchase common shares at a predetermined price.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Cash received on stock transaction after deduction of issuance costs.

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

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

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Stockholders' Equity (Narrative) (Details) - USD ($)						3 Months Ended		9 Months Ended
Stockholders' Equity (Narrative) (Details) - USD ($)	Jul. 16, 2018	May 01, 2018	Mar. 09, 2018	Mar. 07, 2018	Dec. 29, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	May 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)						5,000,000		5,000,000			5,000,000
Preferred stock, par value (usd per share)						$ 0.0001		$ 0.0001			$ 0.0001
Preferred stock, shares issued (in shares)						0		0			0
Warrants issued (in shares)	11,520,000				316,163
Proceeds from issuance of preferred stock, preference stock, and warrants								$ 9,647,000	$ 0
Shares issued upon conversion (in shares)	3,748,184
Convertible preferred stock converted to other securities	$ 7,871,186
Exercise price (usd per share)	$ 2.10				$ 7.42					$ 6.59
Increase (decrease) in fair value of warrant liability						$ 500,000		491,000	0
Warrant term	5 years				5 years
Deemed dividend arising from the issuance of common stock to Series A convertible preferred stockholders under most favored nation provision						$ 8,654,000	$ 0	$ 8,654,000	$ 0
Common stock, shares authorized (in shares)						350,000,000		350,000,000			350,000,000
Common stock, par value (usd per share)						$ 0.0001		$ 0.0001			$ 0.0001
Sale of stock, price per share (in usd per share)	$ 2.10
Common stock warrant, shares to purchase	1
Exercise price (usd per share)	$ 0.0001
Sale of stock, consideration received on transaction	$ 21,600,000
Purchase Agreement \| Private Placement First Closing
Class of Stock [Line Items]
Warrants issued shares (in shares)			774,186
Series A Non-voting Convertible \| Purchase Agreement
Class of Stock [Line Items]
Preferred stock, par value (usd per share)				$ 0.0001
Preferred stock, shares issued (in shares)				10,700
Warrants issued (in shares)				1,383,631
Proceeds from issuance of preferred stock, preference stock, and warrants				$ 10,700,000
Shares issued upon conversion (in shares)				1,844,835
Conversion price (USD per share)						$ 1.00		$ 1.00
Warrant term				5 years 6 months
Series A- Convertible Preferred Stock \| Private Placement First Closing
Class of Stock [Line Items]
Deemed dividend on beneficial conversion feature of convertible preferred stock		$ 2,500,000	$ 2,000,000
Series A- Convertible Preferred Stock \| Purchase Agreement
Class of Stock [Line Items]
Conversion price (USD per share)			$ 5.80	$ 6.59
Series A- Convertible Preferred Stock \| Purchase Agreement \| Private Placement First Closing
Class of Stock [Line Items]
Proceeds from issuance of preferred stock, preference stock, and warrants			$ 6,000,000
Convertible preferred stock issued shares (in shares)			5,987
Series A- Convertible Preferred Stock \| Purchase Agreement \| Private Placement Second Closing
Class of Stock [Line Items]
Proceeds from issuance of preferred stock, preference stock, and warrants			$ 4,700,000
Convertible preferred stock issued shares (in shares)			4,713
Warrants issued shares (in shares)			609,445
Warrant
Class of Stock [Line Items]
Shares issued upon conversion (in shares)	3,748,184
Sale of stock, number of shares issued in transaction	4,675,000
Sale of stock, price per share (in usd per share)	$ 2.0999
Common Stock
Class of Stock [Line Items]
Sale of stock, number of shares issued in transaction	6,845,000