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Note 8 - Income Taxes (Detail) (USD $)	6 Months Ended
Note 8 - Income Taxes (Detail) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Unrecognized Tax Benefits	$ 1,300,000	$ 1,300,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1,300,000	1,300,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense	$ 51,000

This element represents interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

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