Note 5 - Income Taxes (Details) - Federal Income Tax Reconciled to the Effective Income Tax Rate	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal Income Tax Reconciled to the Effective Income Tax Rate [Abstract]
Statutory federal income tax rate	35.00%	35.00%	35.00%
Per diem and other non-deductible expenses	4.00%	5.00%	6.00%
Increase in taxes arising from state income taxes, net of federal income tax benefit	3.00%		3.00%
Other			(1.00%)
Effective tax rate	42.40%	39.90%	43.00%

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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 nondeductible expenses.

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