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Equity Awards - Stock Options Narrative (Details) (Stock Options [Member], USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of options granted 0  
Exercisable/Vested stock options 490,895  
Fair value of exercisable/vested stock options $ 0 $ 400,000
Stock-based compensation expense $ 0 $ 0