Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	$ 612,820	$ 573,108
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	93,750	76,095
US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
US Government-sponsored Enterprises Debt Securities [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	93,750	76,095
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	131,970	118,755
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
US States and Political Subdivisions Debt Securities [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	131,970	118,755
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	378,077	370,439
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
Residential Mortgage Backed Securities [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	378,077	370,439
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	689
Commercial Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0
Commercial Mortgage Backed Securities [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	689
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	6,257	5,826
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
Corporate Debt Securities [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	6,257	5,826
Mutual Funds And Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	2,077	1,993
Mutual Funds And Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
Mutual Funds And Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	0	0
Mutual Funds And Equity Securities [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	2,077	1,993
Fair Value, Inputs, Level 1 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	2,077	1,993
Fair Value, Inputs, Level 2 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	610,743	571,115
Fair Value, Inputs, Level 3 [Member]
Note 18 - Fair Value Measurements (Details) - Available For Sale Investment Securities Measured At Fair Value On A Recurring Basis [Line Items]
Available For Sale Investment Securities	$ 0	$ 0