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Property and Equipment - Additional Information (Detail)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
asset_group
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Depreciation and Other Amortization Expenses [Line Items]        
Depreciation and amortization expense   $ 2.4 $ 11.0 $ 9.8
Number of primary asset groups | asset_group   2    
Impairment charge $ 242.7      
Impairment charges allocated to assets     140.4  
Valencia        
Depreciation and Other Amortization Expenses [Line Items]        
Impairment charge   $ 1.8    
Danbury Facility        
Depreciation and Other Amortization Expenses [Line Items]        
Impairment charge     $ 138.6  
Property And Equipment Impairment        
Depreciation and Other Amortization Expenses [Line Items]        
Impairment charge   0.7    
Asset held for sale        
Depreciation and Other Amortization Expenses [Line Items]        
Impairment charge   $ 0.6