Note 13 - Related Parties (Details Textual) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Related Party Deposits and Repurchase Agreements	$ 19,800,000	$ 18,500,000
Directors and Executive Officers [Member]
Loan Commitments to Related Parties	11,500,000	14,000,000
Loans and Leases Receivable, Related Parties	$ 8,882,000	$ 11,151,000	$ 9,002,000