Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Appraisal Discount Method [Member] | Impaired Loans [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs [Line Items]
Carrying amount	$ 2,100,000	$ 6,400,000
Fair Value, Inputs, Level 3 [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs [Line Items]
Carrying amount	0	$ 0
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs [Line Items]
Carrying amount	3,782,000
Fair Value, Inputs, Level 3 [Member] | Appraisal Discount Method [Member] | Impaired Loans [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs [Line Items]
Carrying amount	$ 2,058,000
Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs [Line Items]
Weighted average of input	18.60%
Weighted Average [Member] | Fair Value, Inputs, Level 3 [Member] | Appraisal Discount Method [Member] | Impaired Loans [Member]
Note 20 - Assets and Liabilities Measured and Reported at Fair Value (Details) - Significant Unobservable Inputs [Line Items]
Weighted average of input	8.40%