Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

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Stock-Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Dec. 31, 2013
Stock-based compensation expense      
Stock compensation expense recognized $ 24,210 $ 85,821  
Number of stock-based compensation awards authorized 16,906,500 16,906,500  
Number of shares available for future grant under the Plan 14,839,533 14,839,533  
Profits interests awards
     
Stock-based compensation expense      
Stock compensation expense recognized 15,700 68,456 433,000
Restricted stock awards
     
Stock-based compensation expense      
Stock compensation expense recognized   16,993  
Stock options
     
Stock-based compensation expense      
Stock compensation expense recognized   $ 372