Its represents consultant plan expenses during the period.

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The value of expense related to stock grant allocated to general and administrative expenses.

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It represents increase decrease in percentage of share based compensation.

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It represents shares reserved but unissued.

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Description of the stock option plan.

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The number of warrants issued to purchase common stock.

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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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Aggregate number of common shares reserved for future issuance.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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Number of new stock issued during the period.

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Number of shares of stock issued attributable to transactions classified as other.

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Stockholders' Equity (Details Textual) - USD ($)	1 Months Ended		3 Months Ended
Stockholders' Equity (Details Textual) - USD ($)	Feb. 27, 2018	Aug. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Apr. 01, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Common Stock, Shares Authorized			62,500,000
Preferred Stock, Shares Authorized			2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			0
Stock Option Plan Description			The Consultant Plan provides for quarterly increases in the available number of authorized shares equal to the lesser of 1% of any new shares issued by the Company during the quarter immediately prior to the adjustment date or such lesser amount as the Board of Directors shall determine.
Stock Issued During Period, Shares, New Issues	12.9
General And Administrative Expense Related To Stock Grant			$ 35,000
Proceeds From Issuance Or Sale Of Equity			$ 11,923,000	$ 8,667,000
Offering [Member]
Class of Stock [Line Items]
Warrants Authorized For Issuance To Acquire Common Stock Shares Number	5,750,000
Proceeds From Issuance Or Sale Of Equity	$ 11,900,000
Stock Issued During Period, Shares, Other	2.25
Consultant Plan [Member]
Class of Stock [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance			142,434
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		10,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 3.50
Shares Reserved Unissued			96,684
Consultant Plan Expenses			$ 9,000	$ 12,000
Consultant Plan One [Member] \| Employee Stock Option [Member]
Class of Stock [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			50,000	143,000
Equity Incentive Plan [Member]
Class of Stock [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Purchase Price Share Minimum			85.00%
Common Stock, Capital Shares Reserved for Future Issuance			1,662,780
Increase Decrease Of Share Based Compensation Arrangement By Share Based Payment Award Percentage			10.00%
Share-based Compensation Outstanding - Reserved but unissued shares under the Plan			969,384			993,860
Shares Reserved Unissued			216,372		791,622
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number			769,233			754,989
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period1			2 years 3 months 18 days
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options			$ 329,000
Equity Incentive Plan At April 1, 2018 [Member]
Class of Stock [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance			2,238,030