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Commitments and Contingencies - Additional Information (Detail)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 26, 2016
USD ($)
installment
Nov. 17, 2014
USD ($)
Jul. 08, 2014
USD ($)
shares
Jun. 23, 2014
USD ($)
Sep. 30, 2015
shares
Mar. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Loss Contingencies [Line Items]                  
Rental expense under operating leases             $ 4.1 $ 3.3 $ 3.0
Minimum period financial metrics must be met             6 months    
Accrued bonus liability                 $ 5.5
Total bonus expense           $ 10.7   $ 5.2  
Consideration for litigation settlement paid by the Company       $ 6.0          
Consideration for litigation settlement paid by insurance     $ 1.7 1.7          
Legal settlement promissory note amount     5.0 5.0          
Loss contingency damages paid by the company     4.3            
Amount for share price fluctuation related to litigation settlement   $ 0.8              
Royalty damages sought             $ 43.0    
Settlement $ 2.8                
Accrued settlement             $ 2.1    
Number of equal quarterly installments | installment 8                
Common Stock                  
Loss Contingencies [Line Items]                  
Net shares issued related to bonus | shares         2,158,436        
Unrestricted Stock                  
Loss Contingencies [Line Items]                  
Legal settlement in shares, value issued     $ 5.0 $ 5.0          
Legal settlement, common stock issued (shares) | shares     2,407,318            
Secured Promissory Note                  
Loss Contingencies [Line Items]                  
Secured note maturity period       30 months          
Secured note interest rate percentage       5.00%