Note 8 - Reclassifications Out of Other Comprehensive Income (Details) - Items Not Reclassified in Their Entirety to Net Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Available for sale securities
Tax expense related to realized gains on securities sold	$ 344	$ 376	$ 1,086	$ 958
	777	772	2,413	1,939
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Available for sale securities
Realized gains on sales of securities held for sale during the period		8	108	116
Tax expense related to realized gains on securities sold		3	37	39
		$ 5	$ 71	$ 77