Note 5 - Basic and Diluted Earnings Per Share (Details) - Basic and Diluted Earnings Per Share (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Earnings per share
Net income	$ 2,350	$ 2,863	$ 12,234
Preferred stock dividends and accretion of discount	0	209
Income available to common shareholders	$ 2,350	$ 2,654
Weighted average common shares outstanding (in Shares)	8,086	8,016
Add dilutive effect of assumed exercises of options (in Shares)	76	48
Weighted average common and dilutive potential common shares outstanding (000) (in Shares)	8,162	8,064
Diluted Earnings per Share (in Dollars per share)	$ 0.29	$ 0.33
Basic Earnings per Share (in Dollars per share)	$ 0.29	$ 0.33