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Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 17, 2014
Jul. 08, 2014
Jun. 23, 2014
Dec. 31, 2015
Mar. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Loss Contingencies [Line Items]                
Future minimum sublease income       $ 0.1   $ 0.1    
Rental expense under operating leases           $ 3.3 $ 3.0 $ 4.1
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              
Common Stock                
Loss Contingencies [Line Items]                
Net shares issued related to bonus       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)   2,407,318            
Secured Promissory Note                
Loss Contingencies [Line Items]                
Secured note maturity period     30 months          
Secured note interest rate percentage     5.00%