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Note 2 - Income Taxes (Detail) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 37.30% 35.10%
Unrecognized Tax Benefits (in Dollars) $ 252,000  
Unrecognized Tax Benefits, Interest on Income Taxes Accrued (in Dollars) $ 12,000