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Commitments and Contingencies - Additional Information (Detail)
 1 Months Ended 12 Months Ended
Jun. 25, 2015
USD ($)
Mar. 31, 2010
USD ($)
Job
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Other Commitments [Line Items]          
Payments for legal settlements $ 20,000        
Logo change agreement period 60 days        
Liability for deferred rent     $ 800,000 $ 800,000  
Operating lease rent expense     $ 4,400,000 $ 3,400,000 $ 2,000,000
Minimum [Member]          
Other Commitments [Line Items]          
Operating lease expiration year     2016    
Maximum [Member]          
Other Commitments [Line Items]          
Operating lease expiration year     2021    
Oklahoma City Economic Development Trust [Member]          
Other Commitments [Line Items]          
Up-front job creation payment from Trust   $ 2,000,000      
Term of agreement   5 years      
Oklahoma City Economic Development Trust [Member] | Minimum [Member]          
Other Commitments [Line Items]          
Number of jobs created within a 5 year period | Job   492      
Average first year wage   $ 37,000      
Capital investment in the project   $ 15,000,000