Note 15 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Note 15 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments [Line Items]
Losses resulting from nonrecurring fair value adjustments	$ 600	$ 892	$ 652	$ 5,791
Impaired Loans [Member]
Note 15 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments [Line Items]
Losses resulting from nonrecurring fair value adjustments	492	$ 892	544	5,501
Other Real Estate Owned [Member]
Note 15 - Fair Values (Details) - Losses Resulting from Nonrecurring Fair Value Adjustments [Line Items]
Losses resulting from nonrecurring fair value adjustments	$ 108		$ 108	$ 290