Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	$ 164,207	$ 160,532
Gross Unrealized Gains	4,330	2,605
Gross Unrealized Losses	(3,031)	(5,994)
Fair Value	165,506	157,143
US Government Agencies Debt Securities [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	25,665	27,289
Gross Unrealized Gains	245	135
Gross Unrealized Losses	(849)	(1,661)
Fair Value	25,061	25,763
US States and Political Subdivisions Debt Securities [Member] | Taxable [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	2,957	3,787
Gross Unrealized Gains	122	46
Gross Unrealized Losses		(38)
Fair Value	3,079	3,795
US States and Political Subdivisions Debt Securities [Member] | Tax-exempt [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	94,530	86,524
Gross Unrealized Gains	2,852	1,562
Gross Unrealized Losses	(1,689)	(3,267)
Fair Value	95,693	84,819
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	37,279	38,816
Gross Unrealized Gains	813	535
Gross Unrealized Losses	(493)	(1,028)
Fair Value	37,599	38,323
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	3,026	3,366
Gross Unrealized Gains	292	327
Fair Value	3,318	3,693
Debt Securities [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	163,457	159,782
Gross Unrealized Gains	4,324	2,605
Gross Unrealized Losses	(3,031)	(5,994)
Fair Value	164,750	156,393
Equity Securities in Financial Institutions [Member]
Note 6 - Investment Securities Available For Sale (Details) - Amortized Cost and Fair Values of Securities Available for Sale [Line Items]
Amortized Cost	750	750
Gross Unrealized Gains	6
Fair Value	$ 756	$ 750