Note 22 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 22 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments [Line Items]
Losses resulting from nonrecurring fair value adjustments	$ 673	$ 2,258	$ 745
Impaired Loans [Member]
Note 22 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments [Line Items]
Losses resulting from nonrecurring fair value adjustments	476	2,216	$ 745
Other Real Estate Owned [Member]
Note 22 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments [Line Items]
Losses resulting from nonrecurring fair value adjustments	$ 197	$ 42