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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
The weighted average fair value of the options granted in the first quarter was $4.08 using the Black Scholes option pricing model with the following assumptions:

Expected life of options
6.2 years
Expected volatility
68.5
%
Risk-free interest rate
1.42
%
Dividend yield
%