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- Definition

Class of Warrant or Right, Shares Subscribed but Unissued

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- Definition

Stockholders Equity Note [Line Items]

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No definition available.

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- Definition

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

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-Name Accounting Standards Codification
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- Definition

Amount of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

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- Definition

Monetary value of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

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- Definition

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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- Definition

Amount of addition (reduction) to the amount at which a liability could be incurred (settled) in a current transaction between willing parties.

+ References

No definition available.

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- Definition

The cash outflow for loan and debt issuance costs.

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- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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- Definition

Number of new stock issued during the period.

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

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Stockholders' Equity - January 2016 Financing (Details) $ / shares in Units, $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Jan. 31, 2016 USD ($) shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 $ / shares
Stockholders Equity Note [Line Items]
Aggregate offering price \| $		$ 10.0
Aggregate gross proceeds from sale of common stock and warrants \| $	$ 7.8	$ 2.2
Payments of transaction costs \| $			$ 0.4
Common Stock
Stockholders Equity Note [Line Items]
Common stock, maximum number of shares to be purchased (in shares) \| shares		1,136,364
Issuance of common stock (in shares) \| shares		8,428
Warrant \| Fair Value, Inputs, Level 3 [Member]
Stockholders Equity Note [Line Items]
Fair value of warrants issued during the period \| $		$ 4.8
Common Stock
Stockholders Equity Note [Line Items]
Maximum number of warrants to be purchased (in shares) \| shares		18,939
Warrants issued (in shares) \| shares		126,421
Payments of transaction costs \| $	$ 0.2
Common Stock \| Valuation Technique, Option Pricing Model [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Stockholders Equity Note [Line Items]
Warrants, measurement input	0.014	0.016
Common Stock \| Valuation Technique, Option Pricing Model [Member] \| Measurement Input, Option Volatility [Member]
Stockholders Equity Note [Line Items]
Warrants, measurement input	0.994	1.019
Common Stock \| Valuation Technique, Option Pricing Model [Member] \| Measurement Input, Expected Dividend Rate [Member]
Stockholders Equity Note [Line Items]
Warrants, measurement input	0	0
Common Stock \| Warrant \| Fair Value, Inputs, Level 3 [Member]
Stockholders Equity Note [Line Items]
Fair value adjustment for modification \| $				$ 0.7
Warrants Expiring May 2022
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					$ 46.50
Warrants Expiring March 2023, Tranche 2
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					21.30
Warrants Expiring January 2023
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					12.60
Warrants Expiring March 2023, Tranche 3
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					18.90
Warrants Expiring March 2020, Tranche 2
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					18.00
Warrants Expiring March 2024
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					10.14
Warrants Expiring January 2023, Tranche 2
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					21.30
Warrants Expiring March 2023
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					12.60
Warrants Expiring May 2023
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					15.00
Warrants Expiring July 2025
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					492.00
Warrants Expiring March 2024 Tranche 3
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					12.00
Warrants Expiring April 2022
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					52.50
Warrants Expiring October 2024
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					387.00
Warrants Expiring March 2024 Tranche 2
Stockholders Equity Note [Line Items]
Exercise price (in usd per share)					$ 9.00