Note 7 - Other Comprehensive Income (Details) - Components of Other Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Components of Other Comprehensive Income (Loss) [Abstract]
Net unrealized gain (loss) on securities available-for-sale, before tax	$ 4,703	$ (1,579)
Net unrealized gain (oss) on securities available-for-sale, tax effect	1,881	(635)
Net unrealized gain (loss) on securities available-for-sale, net of tax	2,822	(944)
Less: Reclassification adjustment for net gains included in net income, before tax	(8)	(23)
Less: Reclassification adjustment for net gains included in net income, tax effect	(3)	(10)
Less: Reclassification adjustment for net gains included in net income, net of tax	(5)	(13)
Other Comprehensive Income (Loss), before tax	4,695	(1,602)
Other Comprehensive Income (Loss), tax effect	1,878	(645)
Other Comprehensive Income (Loss), net of tax	$ 2,817	$ (957)