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Note Q - Stock-Based Compensation (Detail) - (Table 4) (USD $)
6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Expected volatility 47.6% to 48.7% 47.5% to 52.4%
Risk-free interest rate 1.22% to 1.78% 1.62% to 2.16%
Expected life (in years) 2.8 to 4.4 2.8 to 4.4
Expected dividend yield    
Weighted average fair value (in Dollars per share) $ 10.83 $ 8.48