Note 4 - Earnings Per Share (Details) - Computation of Basic and Diluted Earnings Per Share (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Note 4 - Earnings Per Share (Details) - Computation of Basic and Diluted Earnings Per Share [Line Items]
Net income (in Dollars)	$ 1,444,407us-gaap_NetIncomeLoss	$ 1,854,412us-gaap_NetIncomeLoss
Numerator for basic and diluted earnings per share (in Dollars)	$ 1,444,407	$ 1,854,412
Denominator for basic earnings per share – weighted-average shares	10,211,333	10,198,733
Effect of dilutive securities:
Dilutive securities	29,763	40,772
Denominator for diluted earnings per share – weighted-average shares	10,241,096	10,239,505
Basic earnings per share (in Dollars per share)	$ 0.14us-gaap_EarningsPerShareBasic	$ 0.18us-gaap_EarningsPerShareBasic
Diluted earnings per share (in Dollars per share)	$ 0.14us-gaap_EarningsPerShareDiluted	$ 0.18us-gaap_EarningsPerShareDiluted
Employee Stock Option [Member]
Effect of dilutive securities:
Dilutive securities	29,763	39,193
Restricted Stock [Member]
Effect of dilutive securities:
Dilutive securities		1,579

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Numerator for basic and diluted earnings per share.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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