The number of additional stock that has to be issued upon the occurrence of various milestones.

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Gain (Loss) on Settlement of Accrued Liability

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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No definition available.

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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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No definition available.

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

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No definition available.

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Number of new stock issued during the period.

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Reduction in the number of shares during the period as a result of a reverse stock split.

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Number of share options (or share units) exercised during the current period.

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Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

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No definition available.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Stockholder's Equity - Common Stock (Details)							1 Months Ended	5 Months Ended	12 Months Ended
Stockholder's Equity - Common Stock (Details)	Jan. 16, 2018 USD ($)	Dec. 22, 2017 USD ($) $ / shares shares	Dec. 21, 2017 USD ($)	Sep. 23, 2017 USD ($) shares	Sep. 22, 2017 USD ($) $ / shares	Sep. 08, 2017 USD ($)	Nov. 19, 2015 USD ($) shares	Dec. 31, 2017 USD ($) $ / shares shares	Jul. 31, 2017 USD ($) $ / shares shares	Jul. 31, 2016 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)										15,715
Proceeds from warrant exercise \| $								$ 5,292,876	$ 0	$ 0
Stock issued during period, value, issued for services \| $									$ 190,427	$ 1,185,479
Stock issued in reverse stock splits (in shares)									60
Stock split conversion ratio									0.01
Stock issued upon the exercise of options (in shares)										30,000
Prior Period Adjustment
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)									6,228
Stock issued, conversion of convertible securities (in shares)									6,168
Letter of Intent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)							14,327		25,072
Stock issued during the period \| $							$ 120,347
Share-based compensation \| $									$ 168,376
Stock issued upon milestones (in shares)							92,634
Shares issued (in shares)										3,582
Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period for services (in shares)									2,875	120,525
Stock issued during period, value, issued for services \| $									$ 22,051	$ 1,100,000
Minimum \| Letter of Intent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price of stock issued (in dollars per share) \| $ / shares									$ 5.94
Minimum \| Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price of stock issued (in dollars per share) \| $ / shares									7.52
Maximum \| Letter of Intent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price of stock issued (in dollars per share) \| $ / shares									7.75
Maximum \| Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price of stock issued (in dollars per share) \| $ / shares									$ 7.75
Advisory Services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period for services (in shares)		3,455		3,283
Stock issued during period, value, issued for services \| $		$ 100,000	$ 81,000	$ 100,000	$ 133,000	$ 300,000
Share price of stock issued (in dollars per share) \| $ / shares		$ 24.95			$ 40.58
Stock issued during the period \| $		$ 81,000		133,000
Gain (loss) on settlement of accrued liability \| $		$ 19,000		$ (33,000)
Exercise Price Range, $5.00 to $15.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercisable (in shares)								217,500
Exercise Price Range, $5.00 to $15.00 \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of options (in dollars per share) \| $ / shares								$ 5.00
Exercise Price Range, $5.00 to $15.00 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of options (in dollars per share) \| $ / shares								$ 15.00
Exercise Price, $15.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from warrant exercise \| $								$ 5,175,000
Exercise Price, $10.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from warrant exercise \| $								$ 57,900
Exercise Price, $10.00 \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from warrant exercise \| $	$ 60,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period for services (in shares)									27,947	134,852
Stock issued during period, value, issued for services \| $									$ 28	$ 135
Stock issued, conversion of convertible securities (in shares)									6,228
Stock issued upon the exercise of options (in shares)								145,630		15,715
Common Stock \| Exercise Price Range, $5.00 to $15.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)								145,630
Common Stock \| Exercise Price, $15.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)								345,000
Common Stock \| Exercise Price, $10.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock newly-issued during the period (in shares)								11,790
Warrant \| Exercise Price, $15.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price of warrant (in dollars per share) \| $ / shares								$ 15.00
Warrant \| Exercise Price, $10.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price of warrant (in dollars per share) \| $ / shares								$ 10.00