Note 8 - Fair Value Measurements (Details) - Impaired Loans and Other Real Estate Owned Measured at Fair Value on Nonrecurring Basis - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Note 8 - Fair Value Measurements (Details) - Impaired Loans and Other Real Estate Owned Measured at Fair Value on Nonrecurring Basis [Line Items]
Impaired loans	$ 2,320	$ 7,224
Other real estate owned	4,194	4,744
Fair Value, Inputs, Level 3 [Member]
Note 8 - Fair Value Measurements (Details) - Impaired Loans and Other Real Estate Owned Measured at Fair Value on Nonrecurring Basis [Line Items]
Impaired loans	2,320	7,224
Other real estate owned	$ 4,194	$ 4,744