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Note 14 - Earnings Per Common Share (Details) - Summary of Basic and Diluted Earnings Per Common Share (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Summary of Basic and Diluted Earnings Per Common Share [Abstract]
Net income for the year (in Dollars)	$ 6,374,096us-gaap_NetIncomeLoss	$ 4,180,464us-gaap_NetIncomeLoss	$ 4,424,142us-gaap_NetIncomeLoss
Basic weighted average number of common shares outstanding	11,220,874us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	10,468,250us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	11,458,216us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of stock options	509,524us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	813,159us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	825,520us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted weighted average number of shares outstanding	11,730,398us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	11,281,409us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	12,283,736us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic earnings per common share (in Dollars per share)	$ 0.57us-gaap_EarningsPerShareBasic	$ 0.40us-gaap_EarningsPerShareBasic	$ 0.39us-gaap_EarningsPerShareBasic
Diluted earnings per common share (in Dollars per share)	$ 0.54us-gaap_EarningsPerShareDiluted	$ 0.37us-gaap_EarningsPerShareDiluted	$ 0.36us-gaap_EarningsPerShareDiluted

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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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