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Note 24 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value On a Recurring Basis - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investment securities available for sale:
Available for Sale Securities	$ 535,385	$ 426,806
Liabilities:
Interest rate swap liabilities	1,417
US Government Agencies Debt Securities [Member]
Investment securities available for sale:
Available for Sale Securities	56,975	29,894
Residential Mortgage Backed Securities [Member]
Investment securities available for sale:
Available for Sale Securities	297,241	240,320
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale:
Available for Sale Securities	118,381	111,712
Corporate Debt Securities [Member]
Investment securities available for sale:
Available for Sale Securities	14,938
Equity Securities [Member]
Investment securities available for sale:
Available for Sale Securities	334	417
Residential Mortgage Loan Long-Term [Member]
Investment securities available for sale:
Available for Sale Securities	47,492	44,317
Mortgage Banking Derivative [Member]
Investment securities available for sale:
Available for Sale Securities	24
Derivative Instruments [Member]
Investment securities available for sale:
Available for Sale Securities		146
Derivative Financial Instruments, Liabilities [Member] | Interest Rate Swap [Member]
Liabilities:
Interest rate swap liabilities	1,417
Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale:
Available for Sale Securities	115	198
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Investment securities available for sale:
Available for Sale Securities	115	198
Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale:
Available for Sale Securities	535,027	426,243
Liabilities:
Interest rate swap liabilities	1,417
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member]
Investment securities available for sale:
Available for Sale Securities	56,975	29,894
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member]
Investment securities available for sale:
Available for Sale Securities	297,241	240,320
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale:
Available for Sale Securities	118,381	111,712
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Investment securities available for sale:
Available for Sale Securities	14,938
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Loan Long-Term [Member]
Investment securities available for sale:
Available for Sale Securities	47,492	44,317
Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Liabilities [Member] | Interest Rate Swap [Member]
Liabilities:
Interest rate swap liabilities	1,417
Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale:
Available for Sale Securities	243	365
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Investment securities available for sale:
Available for Sale Securities	219	219
Fair Value, Inputs, Level 3 [Member] | Mortgage Banking Derivative [Member]
Investment securities available for sale:
Available for Sale Securities	$ 24
Fair Value, Inputs, Level 3 [Member] | Derivative Instruments [Member]
Investment securities available for sale:
Available for Sale Securities		$ 146

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