XML 47 R35.htm IDEA: XBRL DOCUMENT v3.5.0.2
Class A Redeemable Convertible Preferred Stock - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2016
Dec. 31, 2015
Dec. 30, 2015
Temporary Equity [Line Items]        
Temporary equity, shares issued 14,666,667 14,666,667 14,666,667  
Temporary equity, face value $ 0.001 $ 0.001 $ 0.001  
Series A Redeemable Convertible Preferred Stock [Member]        
Temporary Equity [Line Items]        
Temporary equity, shares issued       14,666,667
Temporary equity, face value       $ 7.50
Temporary equity, liquidation value       $ 110.0
Temporary equity, liquidation description   During the first year, the Series A Preferred Stock has a liquidation value of $100 million if the shares are redeemed prior to December 29, 2016.    
Temporary equity, liquidation at redemption $ 100.0 $ 100.0    
Temporary equity, carrying amount 45.3 45.3 $ 28.6  
Temporary equity, accrual of deemed dividends   5.5    
Temporary equity, accretion of beneficial conversion feature   11.2    
Temporary equity, fair value       $ 73.2
Temporary equity issued, price per share       $ 4.99
Temporary equity issue discount       $ 36.8
Temporary equity, value of beneficial conversion feature 44.7 44.7    
Temporary equity, recognized amount of beneficial conversion feature $ 3.7 $ 11.2