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Note 9 - Income Taxes (Detail) (USD $)	3 Months Ended
Note 9 - Income Taxes (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2011
Income Tax Expense (Benefit)	$ (204,000)	$ 309,000
Effective Income Tax Rate, Continuing Operations		9.40%	(8.90%)
Unrecognized Tax Benefits	13,700,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	4,900,000
Maximum [Member]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	37,000,000
Minimum [Member]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	$ 10,500,000

- 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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