Note 8 - Fair Value of Assets and Liabilities (Details) - Financial Assets Measured at Fair Value on a Recurring Basis (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Securities available for sale
Securities available for sale	$ 217,308	$ 218,110
Loans held for sale	33,603	35,879
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	28,902	29,950
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	28,902	29,950
US Government Agencies Debt Securities [Member]
Securities available for sale
Securities available for sale	28,902	29,950
Collateralized Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	57,752	50,863
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	57,752	50,863
Collateralized Mortgage Backed Securities [Member]
Securities available for sale
Securities available for sale	57,752	50,863
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	130,654	127,139
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	130,654	127,139
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale
Securities available for sale	130,654	127,139
Cash Flow Hedges [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Derivative liability - cash flow hedges	245
Cash Flow Hedges [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Derivative liability - cash flow hedges	245
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale		10,000
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale		10,000
US Treasury Securities [Member]
Securities available for sale
Securities available for sale		10,000
Preferred Stock [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale		158
Preferred Stock [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale		158
Derivative Payable [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Derivative liability - cash flow hedges		331
Derivative Payable [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Derivative liability - cash flow hedges		331
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	217,308	218,110
Loans held for sale	33,603	35,879
Interest rate lock commitments	950	511
Forward sales commitments included in other assets		22
Total assets measured at fair value	251,861	254,522
Fair Value, Inputs, Level 2 [Member]
Securities available for sale
Securities available for sale	217,308	218,110
Loans held for sale	33,603	35,879
Fair Value, Inputs, Level 3 [Member]
Securities available for sale
Total assets measured at fair value	3,400
Fair Value, Measurements, Recurring [Member]
Securities available for sale
Securities available for sale	217,308	218,110
Loans held for sale	33,603	35,879
Interest rate lock commitments	950	511
Forward sales commitments included in other assets		22
Total assets measured at fair value	$ 251,861	$ 254,522