Debt Instrument, Convertible, Additional Conversion Price

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- Definition

Debt Instrument, Period After Product Candidate is Approved to Reach Maturity Date

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- Definition

Debt Instrument, Prepayment Percent of Outstanding Principal

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- Definition

Debt Instrument, Required Written Notice Period Prior to Exercise of Put Right

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- Definition

Derivative Liability, Sensitivity Analysis Of Fair Value, Impact Of 5 Percent Change In Estimated Credit Spread

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- Definition

Derivative Liability, Sensitivity Analysis Of Fair Value, Impact Of 5 Percent Change To The Probability Of A Change Of Control Event Occurring In The Next Fiscal Year

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No definition available.

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- Definition

Derivative Liability, Sensitivity Analysis Of Fair Value, Impact Of 5 Percent Change To The Probability Of A Change Of Control Event Occurring In Year Two

+ References

No definition available.

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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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

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Value of input used to measure derivative liability.

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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Convertible Notes - Narrative (Details)	1 Months Ended	12 Months Ended
Convertible Notes - Narrative (Details)	Sep. 30, 2016 USD ($) shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Debt discount		$ 18,003,000	$ 18,003,000
Amortization period	5 years
Impact of change in probability of change in control event in the next year		300,000
Impact of change in probability of change in control event in year two		100,000
Change in fair value of derivative liability		100,000
Derivative revaluation income (expense)		1,662,000	(1,407,000)
Issued with September 2016 Convertible Notes
Debt Instrument [Line Items]
Debt discount	$ 9,600,000	9,598,000	9,598,000
Compounded Bifurcated Derivatives
Debt Instrument [Line Items]
Debt discount	1,300,000	1,267,000	1,267,000
Beneficial Conversion Feature
Debt Instrument [Line Items]
Debt discount	$ 7,200,000	$ 7,138,000	7,138,000
Issued with September 2016 Convertible Notes
Debt Instrument [Line Items]
Warrants issued to purchase common stock (in shares) \| shares	1,205,840
Convertible Debt
Debt Instrument [Line Items]
Convertible debt principal	$ 18,087,500
Interest rate	4.00%
Period after product candidate FCX-007 is approved to reach maturity date	180 days	180 days
Required written notice period prior to exercise of put right	180 days
Prepayment as a percent of outstanding principal	101.00%
Debt discount	$ 18,100,000
Amortization expense		$ 0	$ 100,000
Effective yield	1157.00%
Convertible Debt \| Option Two
Debt Instrument [Line Items]
Additional conversion price (usd per share) \| $ / shares		$ 0.12625
Convertible Debt \| Option Two \| Minimum
Debt Instrument [Line Items]
Conversion price (usd per share) \| $ / shares		17.04375
Convertible Debt \| Option Two \| Maximum
Debt Instrument [Line Items]
Conversion price (usd per share) \| $ / shares		$ 18.39375
Binomial Lattice Model \| Compounded Bifurcated Derivatives \| Dividend yield
Debt Instrument [Line Items]
Measurement input		0	0
Binomial Lattice Model \| Compounded Bifurcated Derivatives \| Credit Spread
Debt Instrument [Line Items]
Measurement input		0.3177	0.3698