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Note 9 - Income Taxes (Detail) - Income tax expense benefit and effective income tax rate (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income tax expense (in Dollars)	$ 10,035	$ 1,073	$ 19,250	$ 791
Effective income tax rate	38.70%	35.10%	38.90%	35.10%

- 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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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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