Convertible securities, Conversion price per share.

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Eligible employees term.

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Increased in common shares outstanding.

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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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Maximum purchase percentage of employees compensation.

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Number of stockholders votes.

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Preferred stock par value per share.

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

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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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Face amount or stated value per share of common stock.

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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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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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

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Cash received on stock transaction after deduction of issuance costs.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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 share-based payment arrangement.

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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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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of award under share-based payment arrangement.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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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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Convertible Preferred Stock and Stockholders' Equity (Details Narrative)			1 Months Ended			12 Months Ended
	Aug. 07, 2019 USD ($) $ / shares shares	Mar. 05, 2018 USD ($) $ / shares	May 31, 2019 USD ($) shares	Sep. 30, 2016 $ / shares shares	Jun. 30, 2014 USD ($) shares	Dec. 31, 2019 USD ($) Integer $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stockholders votes \| Integer						1
Dividends declared \| $
Dividends paid \| $
Common stock, par value						$ 0.001	$ 0.001
Preferred stock, par or stated value						0.001	$ 0.001
Exercise price of warrants						$ 0.70
Warrants exercisable date						Sep. 29, 2021
Proceeds from warrant exercise \| $							$ 9,864,697
Increased in common shares outstanding \| shares						35,791,927
Increased in stockholders' equity \| $						$ 27,000,000
Options and stock appreciation rights outstanding \| shares						1,857,599	1,165,086
Total compensation cost not yet recognized \| $						$ 1,600,000
Weighted average amortization period of total compensation cost not yet recognized						4 years
Remaining shares available for issuance \| shares						55,532,811	53,465,467
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 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period						4 years
Share price						$ 5.29
Intrinsic value, outstanding \| $						$ 4,400,000
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]
Weighted average remaining contractual life						8 years 2 months 5 days
Options and stock appreciation rights outstanding \| shares						1,857,599
Vested and exercisable \| shares						523,982
Vested and exercisable, weighted average exercise price						$ 3.54
Vested and exercisable, weighted average remaining term						6 years 4 months 6 days
Intrinsic value of option \| $						$ 6,600,000	$ 300,000
Share price						$ 5.29	$ 1.08
Number of shares, vested \| shares						494,137
Weighted average grant date fair value						$ 2.12	$ 0.76
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 \| shares			250,000		250,000
Eligible employees term			3 months		3 months
Maximum purchase percentage of employees compensation			15.00%		15.00%
Maximum fair value of shares subject to repurchase obligation \| $			$ 25,000		$ 25,000
Maximum fair value percentage of shares subject to repurchase obligation			95.00%		95.00%
Remaining shares available for issuance \| shares						261,603
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants		$ 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 \| $						$ 400,000	$ 100,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants		$ 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]
Preferred stock, par or stated value				$ 1,000
Number of preferred stock issued \| shares				24,000
Preferred stock, par value				$ 0.001
Preferred stock, conversion price				$ 0.65
Common stock issuable from warrants \| shares				36,923,078
Preferred stock dividend rate				6.00%
Preferred stock redemption, triggering event, percent of common stock sold threshold				50.00%
Remaining shares available for issuance \| shares						46,398,904	47,844,562
Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of warrants						$ 0.70
Proceeds from warrant exercise \| $		$ 10,000,000
Remaining shares available for issuance \| shares						46,155	1,131,151
Private Placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net proceeds received \| $	$ 23,100,000
Private Placement [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, number of shares sold \| shares	6,585,000
Common stock, par value	$ 0.001
Sale of stock, price per share	$ 2.05
Private Placement [Member] \| Series B Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, number of shares sold \| shares	5,610,121
Preferred stock, par or stated value	$ 0.001
Conversion price per share	$ 2.05