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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Exercise price per share or per unit of warrants or rights outstanding.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Face amount or stated value per share of common stock.

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Unrecognized cost of unvested share-based compensation awards.

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Unrecognized cost of unvested options awarded to employees as compensation.

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No definition available.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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The cash inflow from the additional capital contribution to the entity.

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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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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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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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Note 11 - Stockholders' Equity (Details Textual) - USD ($)			1 Months Ended			12 Months Ended
	Aug. 08, 2014	Jun. 09, 2014	Mar. 31, 2016	Feb. 28, 2015	Feb. 28, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 07, 2016	Aug. 31, 2015	Jun. 06, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						180 days
Proceeds from Issuance of Common Stock						$ 0	$ 9,920	$ 52,722
Allocated Share-based Compensation Expense						$ 0	$ 0	$ 0
Common Stock, Dividends, Per Share, Declared		$ 0.25
Payments of Dividends	$ 2,500,000
Common Stock, Par or Stated Value Per Share						$ 0.0024	$ 0.0024
Stock Repurchase Program, Number of Shares Authorized to be Repurchased									2,200,000	1,200,000
Treasury Stock, Shares, Acquired						520,500	529,000	0
Treasury Stock Acquired, Average Cost Per Share						$ 7.06	$ 7.01
Treasury Stock, Value, Acquired, Cost Method						$ 3,675,654	$ 3,708,862
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						4 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period						33,685	34,484
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized						$ 374,040
Restricted Stock [Member] \| Operating Expense [Member]
Allocated Share-based Compensation Expense						$ 199,870	$ 145,321	$ 67,818
2007 Director Non-Qualified Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						6 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						100,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						10 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant						21,400
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options						$ 0
Restricted Stock Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						4 years
Restricted Stock Plan [Member] \| Restricted Stock [Member] \| Executive Officers, Non-employee Directors and Other Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized						300,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant						197,230
Restricted Stock Plan [Member] \| Restricted Stock [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			11,765	9,344	9,375
Restricted Stock Plan [Member] \| Restricted Stock [Member] \| Independent Director 1 Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			2,031	1,613	1,619
Stockholder Rights Plan [Member]
Common Stock, Par or Stated Value Per Share											$ 0.0024
Class of Warrant or Right, Exercise Price of Warrants or Rights											$ 30
Class Of Warrant Or Right Exercisable, Condition Common Stock Ownership, Percentage											20.00%