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Performance-Based Common Stock Warrants - Additional Disclosures (Details) - Common stock purchase warrant
 3 Months Ended
Mar. 09, 2016
USD ($)
vesting_period
$ / shares
shares
Mar. 31, 2017
USD ($)
shares
Mar. 31, 2016
USD ($)
Class of Warrant or Right [Line Items]      
Number of shares called by warrants (in shares) | shares 725,000    
Exercise price of warrants (in dollars per share) | $ / shares $ 54.55    
Number of vesting periods | vesting_period 3    
Term of successive voting periods (in years) 2 years    
Vesting period one (in years) 2 years    
Total vesting period (in years) 6 years    
Warrants vested (in shares) | shares   0  
Reduction to net sales   $ 900,000 $ 900,000
Income tax benefit   (300,000) $ (300,000)
Unrecognized fair value of unvested warrants   $ 19,800,000  
Supply threshold      
Class of Warrant or Right [Line Items]      
Supply threshold level one, amount $ 260,000,000    
Supply threshold level three, amount 340,000,000    
Supply threshold, amount $ 1,020,000,000.00