Note 17 - Fair Value of Financial Instruments - Schedule of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available-for-sale, at fair value
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available-for-sale, at fair value	98,341	135,494
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available-for-sale, at fair value
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available-for-sale, at fair value	98,341	135,494
Residential Mortgage Backed Securities [Member]
Investment securities available-for-sale, at fair value	98,341	135,494
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available-for-sale, at fair value
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available-for-sale, at fair value	69,326	45,509
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available-for-sale, at fair value
Commercial Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available-for-sale, at fair value	69,326	45,509
Commercial Mortgage Backed Securities [Member]
Investment securities available-for-sale, at fair value	69,326	45,509
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available-for-sale, at fair value
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available-for-sale, at fair value	10,735	14,998
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available-for-sale, at fair value
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available-for-sale, at fair value	10,735	14,998
US States and Political Subdivisions Debt Securities [Member]
Investment securities available-for-sale, at fair value	10,735	14,998
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available-for-sale, at fair value
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available-for-sale, at fair value	2,006	1,982
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available-for-sale, at fair value
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available-for-sale, at fair value	2,006	1,982
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available-for-sale, at fair value
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available-for-sale, at fair value	763	780
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available-for-sale, at fair value
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available-for-sale, at fair value	763	780
Corporate Debt Securities [Member]
Investment securities available-for-sale, at fair value	763	780
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available-for-sale, at fair value
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available-for-sale, at fair value	80	80
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available-for-sale, at fair value
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member]
Investment securities available-for-sale, at fair value	80	80
US Treasury Securities [Member]
Investment securities available-for-sale, at fair value	80	80
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Liabilities [Member]
Other liabilities - derivatives
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Assets [Member]
Other assets - derivatives, fair value
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Liabilities [Member]
Other liabilities - derivatives	(130)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Assets [Member]
Other assets - derivatives, fair value		3
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Liabilities [Member]
Other liabilities - derivatives
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Assets [Member]
Other assets - derivatives, fair value
Fair Value, Measurements, Recurring [Member] | Other Liabilities [Member]
Other liabilities - derivatives	(130)
Fair Value, Measurements, Recurring [Member] | Other Assets [Member]
Other assets - derivatives, fair value		3
Investment securities available-for-sale, at fair value	$ 181,251	$ 198,843