Class of warrant or right, Number of warrants exercised

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Eligible employees term.

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Maximum fair value of shares subject to repurchase obligation.

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Maximum fair value percentage of shares subject to repurchase obligation.

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- Definition

Maximum purchase percentage of employees compensation.

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- Definition

Number of restrcited warrants exercise.

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- Definition

Number of stockholders votes.

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Preferred stock par value per share.

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- Definition

Preferred stock redemption, triggering event, Percent of common stock sold threshold

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Preferred stock stated value per share.

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- Definition

Stock plan expiration date.

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Date the warrants or rights are exercisable, in CCYY-MM-DD format.

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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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Aggregate number of common shares reserved for future issuance.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

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The percentage rate used to calculate dividend payments on preferred stock.

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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

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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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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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Number of additional shares authorized for issuance under an established share-based compensation plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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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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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. 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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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. 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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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of share-based compensation awards.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 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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Number of options vested.

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

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Value of preferred stock and warrants for common stock issued.

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Convertible Preferred Stock and Stockholders' Equity (Details Narrative)	1 Months Ended		12 Months Ended
	Sep. 30, 2016 $ / shares shares	Jun. 30, 2014 USD ($) shares	Dec. 31, 2018 USD ($) Integer $ / shares shares	Dec. 31, 2017 USD ($) shares	Mar. 05, 2018 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stockholders votes \| Integer			1
Dividends declared \| $
Dividends paid \| $
Exercise price of warrants \| $ / shares			$ 0.70
Warrants exercisable date			Sep. 29, 2021
Increased in stockholders' equity \| $			$ 27,000,000
Increased in common shares outstanding			35,791,927
Proceeds from warrant exercise \| $			$ 9,864,697
Options and stock appreciation rights outstanding			1,165,086	413,301
Number of shares, exercised			2,916
Total compensation cost not yet recognized \| $			$ 600,000
Weighted average amortization period of total compensation cost not yet recognized			4 years
Remaining shares available for issuance			53,465,467	92,322,345
Stock Options and Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining contractual life			8 years 2 months 5 days
Options and stock appreciation rights outstanding			1,165,086
Vested and exercisable			291,679
Vested and exercisable, weighted average exercise price \| $ / shares			$ 7.83
Vested and exercisable, weighted average remaining term			5 years 1 month 27 days
Intrinsic value, outstanding \| $			$ 300,000
Share price \| $ / shares			$ 1.08
Number of shares, vested
Weighted average grant date fair value \| $ / shares			$ 0.76
2012 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock plan expiration date			Mar. 25, 2012
2012 Stock Incentive Plan [Member] \| New Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period			2 years
2012 Stock Incentive Plan [Member] \| Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration term			10 years
Exercise price as percentage of fair value			100.00%
Options vesting percentage			25.00%
Options vesting period			3 years
2012 Stock Incentive Plan [Member] \| Stock Option [Member] \| Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration term			10 years
Exercise price as percentage of fair value			100.00%
2012 Stock Incentive Plan [Member] \| Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options expiration term			10 years
Options vesting percentage			25.00%
Options vesting period			3 years
2012 Stock Incentive Plan [Member] \| Time-Based Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period			3 years
2012 Stock Incentive Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period			4 years
Intrinsic value, outstanding \| $			$ 700,000
Share price \| $ / shares			$ 1.08
Intrinsic value, vested \| $			$ 300,000
2012 Stock Incentive Plan [Member] \| Stock Options and Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, exercised
Proceeds from stock options exercised \| $
2009 Employee Stock Purchase Plan ("ESPP") [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of shares authorized for issuance		250,000
Eligible employees term		3 months
Maximum purchase percentage of employees compensation		15.00%
Maximum fair value of shares subject to repurchase obligation \| $		$ 25,000
Maximum fair value percentage of shares subject to repurchase obligation		95.00%
Remaining shares available for issuance		51,251
Warrant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of restricted warrants exercise			35,791,927
Proceeds from warrant exercise \| $			$ 10,000,000
Remaining shares available for issuance			1,131,151	38,779,119
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants \| $ / shares					$ 0.70
Maximum [Member] \| 2012 Stock Incentive Plan [Member] \| Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period			5 years
Maximum [Member] \| 2012 Stock Incentive Plan [Member] \| Stock Options and Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value, exercised \| $			$ 100,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants \| $ / shares					$ 0.28
Minimum [Member] \| 2012 Stock Incentive Plan [Member] \| Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period			1 year
Series A Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of preferred stock issued	24,000
Preferred stock, par value \| $ / shares	$ 0.001
Preferred stock, stated value \| $ / shares	1,000
Preferred stock, conversion price \| $ / shares	$ 0.65
Common stock issuable from warrants	36,923,078
Preferred stock dividend rate	6.00%
Preferred stock redemption, triggering event, percent of common stock sold threshold	50.00%