Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Investment securities available for sale, amortized cost	$ 216,936	$ 219,203
Investment securities available for sale, gross unrealized gains	641	521
Investment securities available for sale, gross unrealized losses	(2,995)	(5,341)
Investment securities available for sale, fair value	214,582	214,383
US Government Agencies Debt Securities [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Investment securities available for sale, amortized cost	1,923
Investment securities available for sale, gross unrealized gains	2
Investment securities available for sale, fair value	1,925
State and Municipal [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Investment securities available for sale, amortized cost	5,680	7,393
Investment securities available for sale, gross unrealized gains	105	138
Investment securities available for sale, gross unrealized losses	(22)	(71)
Investment securities available for sale, fair value	5,763	7,460
Collateralized Mortgage Obligations (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Investment securities available for sale, amortized cost	93,217	97,303
Investment securities available for sale, gross unrealized gains	9	30
Investment securities available for sale, gross unrealized losses	(2,416)	(4,201)
Investment securities available for sale, fair value	90,810	93,132
Other Mortgage-Backed (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Investment securities available for sale, amortized cost	79,856	76,852
Investment securities available for sale, gross unrealized gains	320	95
Investment securities available for sale, gross unrealized losses	(442)	(927)
Investment securities available for sale, fair value	79,734	76,020
SBA Loan-Backed (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Investment securities available for sale, amortized cost	36,260	37,655
Investment securities available for sale, gross unrealized gains	205	258
Investment securities available for sale, gross unrealized losses	(115)	(142)
Investment securities available for sale, fair value	$ 36,350	$ 37,771