Note 5 - Federal Home Loan Bank Advances (Details) - Contractual Maturities and Average Effective Rates of Outstanding Advances - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Contractual Maturities and Average Effective Rates of Outstanding Advances [Abstract]
	$ 30,000	$ 30,000
	2.33%	2.30%
	$ 1,850	$ 1,885
	2.23%	2.23%
	$ 446	$ 497
	2.12%	2.12%
	$ 2,916	$ 3,064
	2.36%	2.36%
	$ 7,132
	2.44%
	$ 1,355	$ 1,386
	1.47%	1.47%
	$ 43,699	$ 36,832
	2.32%	2.27%