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Note 14 - Income Taxes (Details) - Reconciliation of the Statutory Federal Income Tax Rate to the Company's Effective Income Tax Rate	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of the Statutory Federal Income Tax Rate to the Company's Effective Income Tax Rate [Abstract]
Statutory federal income tax rate	35.00%	35.00%	35.00%
Increase (decrease) due to
State income taxes, net of federal income tax benefit	5.26%	5.33%	5.26%
Tax exempt interest and dividend income	(1.25%)	(2.28%)	(2.17%)
Stock-based compensation expense	0.02%	0.04%	0.06%
Other	(1.28%)	(1.02%)	(0.56%)
Effective tax rates	37.75%	37.07%	37.59%

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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 equity-based compensation costs.

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