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Note 11 - Basic and Diluted Earnings Per Common Share (Details) - Summary of Basic and Diluted Earnings Per Common Share - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator for basic and diluted earnings per common share:
Net income for the period (in Dollars)	$ 3,159,457	$ 2,690,905	$ 8,278,395	$ 4,514,926
Denominator for basic and diluted earnings per common share:
Basic weighted average number of common shares outstanding	10,984,869	11,321,175	11,057,634	11,190,684
Effect of outstanding stock options	387,813	466,574	412,023	528,226
Diluted weighted average number of shares outstanding	11,372,682	11,787,749	11,469,657	11,718,910
Basic earnings per common share
(in Dollars per share)	$ 0.29	$ 0.24	$ 0.75	$ 0.40
Diluted earnings per common share
(in Dollars per share)	$ 0.28	$ 0.23	$ 0.72	$ 0.39

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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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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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