Note 6 - Premises and Equipment (Details) - Premises and Equipment - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Premises and Equipment [Abstract]
Land, buildings, and leasehold improvements	$ 59,708	$ 59,681
Furniture and equipment	17,586	18,290
Total premises and equipment	77,294	77,971
Less accumulated depreciation and amortization	44,182	43,038
Premises and equipment, net	$ 33,112	$ 34,933