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Stock-Based Compensation (Assumptions Used in the Black-Scholes Option Pricing Model) (Details) (USD $)
12 Months Ended
Dec. 31, 2010
Weighted-average grant date fair value $ 2.81
Options granted 773,018.00
Maximum [Member]
 
Risk-free interest rate 1.43%
Expected volatility 75.00%
Minimum [Member]
 
Risk-free interest rate 0.78%
Expected volatility 72.00%