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Note 4 - Income Taxes (Detail) (USD $)	3 Months Ended
Note 4 - Income Taxes (Detail) (USD $)	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%
Liability for Uncertain Tax Positions, Current	$ 1,900,000		$ 2,600,000
Income Tax Expense (Benefit)	(909,000)	(265,000)
Increase (Decrease) in Deferred Income Taxes	300,000
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Operating Activities	112,000
Reversal of Previously Recorded Reserves [Member]
Income Tax Expense (Benefit)	$ 400,000

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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- 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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