The number of warrants exchanged by agreement with warrant holders.

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- Definition

The amount of fair value of common stock to be issued in warrant exchange.

+ References

No definition available.

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- Definition

The amount of gains (losses) from revaluation of common stock liability.

+ References

No definition available.

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The amount of gains (losses) from revaluation of warrant liability.

+ References

No definition available.

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- Definition

Number of new stock issued during the period due to and exercise of warrants.

+ References

No definition available.

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- Definition

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

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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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No definition available.

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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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Number of warrants or rights outstanding.

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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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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' DEFICIT - Warrants (Details)	Jan. 31, 2020 USD ($)	Jan. 28, 2020 USD ($) item shares	Apr. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) Y item $ / shares shares
Warrants
Number of warrants outstanding			220,394
Common stock liability \| $	$ 383,000		$ 0
Warrants related to June 2015 financing
Warrants
Number of warrants outstanding			364
Warrants exercise price (in dollars per share) \| $ / shares			$ 825.00
Warrants related to April 2016 financing
Warrants
Number of warrants outstanding			5,882
Warrants exercise price (in dollars per share) \| $ / shares			$ 360.00
Warrants related to September 2016 financing
Warrants
Number of warrants outstanding			2,378
Warrants exercise price (in dollars per share) \| $ / shares			$ 225.00	$ 225.00
Number of shares of common stock subject to warrants (in shares)				4,288
Warrant liability \| $				$ 566,000
Warrants related to September 2016 financing \| Black-Scholes pricing model \| Risk-free interest rate
Warrants
Warrants, measurement input \| item				0.011
Warrants related to September 2016 financing \| Black-Scholes pricing model \| Contractual term
Warrants
Warrants, measurement input \| Y				5
Warrants related to September 2016 financing \| Black-Scholes pricing model \| Expected volatility
Warrants
Warrants, measurement input \| item				0.958
Warrants related to September 2016 financing \| Black-Scholes pricing model \| Dividend rate
Warrants
Warrants, measurement input \| item				0.00
Warrants related to November 2016 financing \| Tranche one
Warrants
Number of warrants outstanding			101,353
Warrants exercise price (in dollars per share) \| $ / shares			$ 105.00
Warrants related to November 2016 financing \| Tranche two
Warrants
Number of warrants outstanding			2,985
Warrants exercise price (in dollars per share) \| $ / shares			$ 131.25
Warrants related to November 2016 financing \| Tranche three
Warrants
Number of warrants outstanding			661
Warrants exercise price (in dollars per share) \| $ / shares			$ 99.00
Warrants related to April 2017 financing
Warrants
Number of warrants outstanding			2,671
Warrants exercise price (in dollars per share) \| $ / shares			$ 270.00
Warrants related to October 2017 financing
Warrants
Number of warrants outstanding			3,205
Warrants exercise price (in dollars per share) \| $ / shares			$ 90.00
Warrants related to November 2017 financing
Warrants
Number of warrants outstanding			100,895
Warrants exercise price (in dollars per share) \| $ / shares			$ 60.00
Warrants related to September 2016 and November 2017 financing
Warrants
Number of warrants exchanged		189,205
Issuance of common stock in warrant exchange (in shares)		70,833
Reduction in common stock liability \| $	280,000
Common stock liability \| $	$ 383,000		$ 0
Warrants related to September 2016 and November 2017 financing \| Black-Scholes pricing model \| Other income and expense
Warrants
Charge resulting from revaluation of warrant liability \| $		$ (308,000)
Warrants related to September 2016 and November 2017 financing \| Black-Scholes pricing model \| Risk-free interest rate
Warrants
Warrants, measurement input \| item		0.0147
Warrants related to September 2016 and November 2017 financing \| Black-Scholes pricing model \| Expected volatility
Warrants
Warrants, measurement input \| item		1.06
Warrants related to September 2016 and November 2017 financing \| Black-Scholes pricing model \| Dividend rate
Warrants
Warrants, measurement input \| item		0.00