Shareholders' Equity, Options and Warrants - Schedule of Stock Option Activity (Details)	6 Months Ended
Jun. 30, 2019 USD ($) $ / shares shares
Share-Based Compensation Arrangement By Share-Based Payment Award Options Outstanding
Stock options outstanding, beginning of period \| shares	27,805,000
Stock options, exercised \| shares	(3,700,000)
Stock options, expired \| shares	(632,000)
Stock options, forfeited \| shares	(600,000)
Stock options outstanding, end of period \| shares	23,488,000
Stock options exercisable, end of period \| shares	15,101,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted average exercise price outstanding, beginning of period \| $ / shares	$ 0.06
Weighted average exercise price, exercised \| $ / shares	0.04
Weighted average exercise priced, expired \| $ / shares	0.10
Weighted average exercise priced, forfeited \| $ / shares	0.04
Weighted average exercise price outstanding, end of period \| $ / shares	0.05
Weighted average exercise price exercisable, end of period \| $ / shares	$ 0.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures
Weighted average remaining contractual life outstanding, end of period	6 years 10 months
Weighted average remaining contractual life exercisable, end of period	6 years
Average intrinsic value outstanding, end of period \| $	$ 235,000
Average intrinsic value, exercisable, end of period \| $	$ 235,000

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, 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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Number of share options (or share units) exercised during the current period.

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