Note 11 - Stock-Based Compensation (Details) - Stock Options Exercised: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Options Exercised: [Abstract]
Proceeds from stock options exercised	$ 533	$ 885	$ 2,040
Fair value of shares received upon exercise of stock options	6,814	905	54
Tax benefit related to stock options exercised	151	56	184
Intrinsic value of stock options exercised	$ 1,228	$ 256	$ 427