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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2013
Stock-Based Compensation (Valuation Assumption) [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Year Ended December 31,

 

 

 

 

 

 

2013 

 

2012 

Dividend yield

0.00% 

 

0.00% 

Expected volatility

44.27-45.00%

 

22.98% 

Risk free interest rate

1.33-1.92%

 

2.21% 

Expected life

5.5-6 Years

 

5 Years