Represents the debenture original issue discount rate.

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Represents the number of volume weighted average price of common stock.

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Represents the percentage of average of lowest two volume weighted average price of common stock.

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

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

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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No definition available.

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

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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

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Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period.

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash inflow from an obligation which places a lender in a lien position behind debt having a higher priority of repayment (senior loan) in liquidation of the entity's assets scheduled to be repaid within one year or in the normal operating cycle of the entity, if longer.

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The cash outflow for an obligation which places a lender in a lien position behind debt having a higher priority of repayment (senior loan) in liquidation of the entity's assets scheduled to be repaid within one year or in the normal operating cycle of the entity, if longer.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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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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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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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Debt - Convertible Subordinated Debentures (Details) $ / shares in Units, $ in Thousands			12 Months Ended
	Jun. 20, 2019 USD ($)	Mar. 29, 2019 USD ($) D item $ / shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 18, 2019 USD ($)	Mar. 28, 2019 $ / shares	Nov. 28, 2018 shares
Short-term debt
Purchase price			$ 2,000
Repayment of subordinated convertible debentures			2,200
Loss on extinguishment of debt			(71)
Embedded derivative liability		$ 500			$ 0
Warrant expense			$ 49,027	$ 145
Interest Expense
Short-term debt
Fair value adjustment of embedded derivative		500
Secured subordinated convertible debentures due June 28, 2019
Short-term debt
Purchase price		2,000
Face amount		$ 2,200
Original issue discount		10.00%
Carrying amount		$ 1,500
Repayment of subordinated convertible debentures	$ 2,200
Loss on extinguishment of debt	$ 100
Percentage of average of lowest two volume weighted average price of common stock		80.00%
Number of volume weighted average price of common stock \| item		2
Number of trading days prior to conversion \| D		20
Secured subordinated convertible debentures due June 28, 2019 \| Maximum
Short-term debt
Conversion price \| $ / shares		$ 0.33
November 28, 2018 Series A investor warrants
Short-term debt
Number of shares in exchange of warrant exercise \| shares							66,667
Exercise price of warrants (in dollars per share) \| $ / shares		$ 1.20				$ 180.00
Warrant expense		$ 100
November 28, 2018 Series A investor warrants \| Risk-free interest rate
Short-term debt
Warrant fair value measurement inputs (as a percent)		2.2
November 28, 2018 Series A investor warrants \| Expected term
Short-term debt
Warrants term		4 years 8 months 12 days
November 28, 2018 Series A investor warrants \| Expected dividends
Short-term debt
Warrant fair value measurement inputs (as a percent)		0.0
November 28, 2018 Series A investor warrants \| Expected volatility
Short-term debt
Warrant fair value measurement inputs (as a percent)		204.4