Note 14 - Stock-Based Compensation (Details) - Stock Option Plans (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Option Plans [Abstract]
Outstanding, beginning	608,852	535,130	510,612
Outstanding, beginning (in Dollars per share)	$ 13.27	$ 13.85	$ 14.04
Outstanding, ending	662,506	608,852	535,130
Outstanding, ending (in Dollars per share)	$ 13.82	$ 13.27	$ 13.85
Exercisable, ending	419,735	391,378	355,398
Weighted average fair value per option of options granted during the period (in Dollars per share)	$ 5.14	$ 2.79	$ 2.74
Granted	96,232	102,722	73,250
Granted (in Dollars per share)	$ 15.68	$ 9.30	$ 8.23
Exercised	(41,258)	(17,876)	(36,459)
Exercised (in Dollars per share)	$ 10.06	$ 9.68	$ 8.30
Forfeited	(1,320)	(11,124)	(12,273)
Forfeited (in Dollars per share)	$ 10.53	$ 10.57	$ 8.28