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Stock-Based Compensation (Valuation Assumptions) (Details) (Stock options [Member], Stock options [Member], USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected term (in years) 0 years 6 years 6 years 6 years
Volatility 0.00% 65.20% 63.94% 65.20%
Risk-free interest rate 0.00% 1.13% 0.19%  
Dividend yield 0.00% 0.00% 0.00% 0.00%
Weighted-average estimated fair value of stock options granted $ 0.00 $ 1.26 $ 1.15 $ 1.36
Minimum [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate       1.07%
Maximum [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-free interest rate       1.13%