Note 9 - Components of Accumulated Other Comprehensive Loss (Details) - Reclassifications Out of Accumulated Other Comprehensive 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
Reclassifications out of unrealized gains and losses on available-for-sale securities:
Realized securities gains, net	$ 4	$ (68)	$ 4	$ (50)
Income tax expense (benefit)	1	(24)	1	(18)
Realized gains and losses on available-for-sale securities, net of tax, reclassified out of accumulated other comprehensive income	$ 3	$ (44)	$ 3	$ (32)