Stockholders' Equity (Details Narrative) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based compensation arrangement by share-based payment award, options granted
Share based compensation arrangement by share based payment award options vested outstanding number	117,675	315,167
Share-based compensation, shares authorized under stock option plans, exercise price range, number of outstanding options	117,675
Share-based compensation, shares authorized under stock option plans, exercise price range, exercisable options, weighted average exercise price (in dollars per share)	$ 2.57
Share-based compensation, shares authorized under stock option plans, exercise price range, outstanding options, weighted average remaining contractual term	4 years
Share-based compensation arrangement by share-based payment award, options, outstanding, intrinsic value (in dollars)	$ 0
Share based compensation arrangement by share based payment award options expected to be forfeited	0
2012 Equity Incentive Plan [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	643,797
Share-based compensation arrangement by share-based payment award, options granted
Share-based compensation arrangement by share-based payment award, number of shares available for grant	411,593
Restricted Stock [Member] \| 2012 Equity Incentive Plan [Member] \| Minimum [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent	100.00%
Non Qualified Stock Options [Member] \| 2012 Equity Incentive Plan [Member] \| Minimum [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent	10.00%
Incentive Stock Options [Member] \| 2012 Equity Incentive Plan [Member] \| Minimum [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent	100.00%
Incentive Stock Options [Member] \| 2012 Equity Incentive Plan [Member] \| Minimum [Member] \| If Recipient Owns Greater Than Ten Percent Voting Power [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based compensation arrangement by share-based payment award, purchase price of common stock, percent	110.00%

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As of the balance sheet date, the number of shares into which fully expected to be forfeited stock options.

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As of the balance sheet date, the number of shares into which fully vested stock options outstanding can be converted under the option plan.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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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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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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

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

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