Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Amortized cost	$ 211,283	$ 219,203
Gross unrealized gains	747	521
Gross unrealized losses	(2,413)	(5,341)
Fair value	209,617	214,383
US Government Agencies Debt Securities [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Amortized cost	1,932
Gross unrealized gains	14
Fair value	1,946
State and Municipal [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Amortized cost	5,263	7,393
Gross unrealized gains	110	138
Gross unrealized losses	(27)	(71)
Fair value	5,346	7,460
Collateralized Mortgage Obligations (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Amortized cost	92,288	97,303
Gross unrealized gains	13	30
Gross unrealized losses	(1,687)	(4,201)
Fair value	90,614	93,132
Other Mortgage-Backed (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Amortized cost	77,482	76,852
Gross unrealized gains	430	95
Gross unrealized losses	(580)	(927)
Fair value	77,332	76,020
SBA Loan-Backed (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Reconciliation of Available-for-sale Securities [Line Items]
Amortized cost	34,318	37,655
Gross unrealized gains	180	258
Gross unrealized losses	(119)	(142)
Fair value	$ 34,379	$ 37,771