Note 10 - Income Taxes (Details) - A Reconciliation of Income Tax Expense	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
A Reconciliation of Income Tax Expense [Abstract]
Computed at statutory rate	34.00%	34.00%	34.00%
Increase (reduction) in taxes resulting from:
State financial institution tax and credits	(11.10%)	(9.00%)	(33.10%)
ESOP			(3.30%)
Cash surrender value of life insurance	(1.80%)	(1.90%)	(7.90%)
Valuation allowance			(3.50%)
Other	(3.60%)	0.60%	6.60%
Actual effective rate	17.50%	23.70%	(7.20%)

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend paid to employee stock ownership plan.

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