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Note 14 - Earnings Per Share (Detail) - Basic and Diluted Earnings Per Share Calculation (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Numerator
Net income	$ 28,958,487	$ 8,549,791	$ 11,093,191
Less: Dividends declared and undistributed earnings allocated to non-vested shares	(11,220)		(16,469)
Net income attributable to common shareholders, basic	$ 28,947,267	$ 8,549,791	$ 11,076,722
Denominator
Weighted average number of shares outstanding, basic and diluted (in Shares)	20,552,568	20,909,154	21,539,331
Earnings per share, basic and diluted (in Dollars per share)	$ 1.41	$ 0.41	$ 0.51

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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