Note 12 - Stock-Based Compensation (Details) - Stock Option Activity (USD $)	12 Months Ended
	Dec. 31, 2014
Stock Option Activity [Abstract]
Shares Under Option	164,098
Shares Under Option, Weighted-Average Exercise Price	$ 10.99
Weighted-Average Remaining Contractual Term	5 years 109 days
Aggregate Intrinsic Value	$ 3,518,524	[1]
Fully vested and exercisable at December 31, 2014	38,239
Fully vested and exercisable at December 31, 2014	$ 11.28
Fully vested and exercisable at December 31, 2014	2 years 292 days
Fully vested and exercisable at December 31, 2014	$ 1,551,088	[1]
Exercised	(77,708)
Exercised	$ 10.88
Canceled/forfeited/expired	(42)
Canceled/forfeited/expired	$ 11.22
Shares Under Option	86,348
Shares Under Option, Weighted-Average Exercise Price	$ 11.09

[1] The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price of the option. The per share marketvalue of our common stock, as determined by the closing price on December 31, 2014, was $51.84.