Note 20 - Fair Value Measurements (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Special Mention Or Worse [Member]
Collateral Dependent Loans Amount At Which All Loans Are Tested	$ 1,500,000
Foreclosed Assets Not Covered By FDIC Loss Share [Member]
Real Estate Acquired Through Foreclosure	$ 30,500,000	$ 44,900,000
Commercial and Residential Real Estate Collateral [Member] | Minimum [Member]
Fair Value Percentage Of Collateral Discount	10.00%
Commercial and Residential Real Estate Collateral [Member] | Maximum [Member]
Fair Value Percentage Of Collateral Discount	40.00%
Collateral Dependent Loans [Member]
Impaired Financing Receivable, Related Allowance	$ 2,350,000	1,136,000
Real Estate Acquired Through Foreclosure	30,529,000	44,820,000
Impaired Financing Receivable, Related Allowance	$ 3,149,000	$ 2,831,000