Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Details)

v3.6.0.2
Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Jan. 01, 2016
Income Tax Disclosure [Abstract]        
Federal income tax provision, current $ 0 $ 0 $ 0  
New Accounting Pronouncement, Early Adoption [Line Items]        
Tax credit 66,326,000      
Operating Loss Carryforwards [Line Items]        
Valuation allowance 47,682,000 49,095,000    
Increase (decrease) in valuation allowance   44,392,000    
Unrecognized tax benefits 303,583,000 253,277,000 $ 1,432,000  
Unrecognized tax benefits that would impact effective tax rate 198,664,000      
Uncertain tax positions are recognized in other long-term liabilities 4,780,000 3,525,000    
Penalties accrued 0      
Unrecognized tax benefits, increase resulting from interest 100,000 $ 89,000    
Early Adoption, Effect | Accounting Standards Update 2016-09        
New Accounting Pronouncement, Early Adoption [Line Items]        
Increase in deferred tax assets 293,896,000     $ 293,896,000
Domestic Tax Authority        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforward $ 3,245,207,000