Note 22 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Available-for-sale securities
Assets measured at fair value	$ 186,986		$ 216,640
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	6,393		6,264
US Government Agencies Debt Securities [Member]
Available-for-sale securities
Assets measured at fair value	6,393		6,264
Obligations of State and Political Subdivisions [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	54,363		59,209
Obligations of State and Political Subdivisions [Member]
Available-for-sale securities
Assets measured at fair value	54,363		59,209
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	47,015		62,991
Residential Mortgage Backed Securities [Member]
Available-for-sale securities
Assets measured at fair value	47,015		62,991
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Assets measured at fair value	1,467
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	36,267		48,230
Corporate Debt Securities [Member]
Available-for-sale securities
Assets measured at fair value	37,734		48,230
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Assets measured at fair value	1,104
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	9,285		10,472
Commercial Mortgage Backed Securities [Member]
Available-for-sale securities
Assets measured at fair value	10,389		10,472
Other Investment Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	31,092	[1]	29,474	[1]
Other Investment Securities [Member]
Available-for-sale securities
Assets measured at fair value	31,092	[1]	29,474	[1]
Fair Value, Inputs, Level 1 [Member]
Available-for-sale securities
Assets measured at fair value	2,571
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Available-for-sale securities
Liabilities measured at fair value	3,224		2,890
Fair Value, Inputs, Level 2 [Member]
Available-for-sale securities
Assets measured at fair value	184,415		216,640
Interest Rate Swap [Member]
Available-for-sale securities
Liabilities measured at fair value	$ 3,224		$ 2,890

[1] Principally represents residential mortgage backed securities issued by both by governmental and nongovernmental agencies, and other asset backed securities.