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Note 5 - Income Taxes (Detail) - Federal income tax reconciled to the effective income tax rate:	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Statutory federal income tax rate	35.00%	35.00%	35.00%
Per diem and other non-deductible expenses	5.00%	6.00%	6.00%
Increase in taxes arising from state income taxes, net of federal income tax benefit		3.00%	3.00%
Other		(1.00%)	(1.00%)
Effective tax rate	39.90%	42.50%	43.00%

X

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The sum of the differences between the effective income tax rate and domestic federal statutory income tax rate attributable to all nondeductible expenses under enacted tax laws.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period.

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